Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity (Deficit)

v2.4.1.9
Consolidated Statements of Stockholders' Equity (Deficit) (USD $)
In Thousands, except Share data
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Balances, value at Dec. 31, 2011 $ 4,483us-gaap_StockholdersEquity $ 49us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 256,563us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (1)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
$ (252,128)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= thld_AccumulatedDeficitMember
Balances, shares at Dec. 31, 2011   49,128,475us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock to certain investors, net of issuance costs of $0.4 million, value 12,323us-gaap_StockIssuedDuringPeriodValueNewIssues 2us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
12,321us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock to certain investors, net of issuance costs of $0.4 million, shares   2,022,144us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of warrants to purchase common stock, value 8,849thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock 5thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
8,844thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Exercise of warrants to purchase common stock, shares   4,727,331thld_ExerciseOfWarrantsToPurchaseSharesOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock pursuant to stock plans, value 738us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation   738us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock pursuant to stock plans, shares   553,257us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Stock-based compensation 3,010us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   3,010us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Reclassification of fair value of warrants exercised from liability to equity 27,867us-gaap_AdjustmentsToAdditionalPaidInCapitalOther   27,867us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Change in unrealized gain (loss) on marketable securities 12us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax     12us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
 
Net loss (71,135)us-gaap_NetIncomeLoss       (71,135)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= thld_AccumulatedDeficitMember
Balances, value at Dec. 31, 2012 (13,853)us-gaap_StockholdersEquity 56us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
309,343us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
11us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
(323,263)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= thld_AccumulatedDeficitMember
Balances, shares at Dec. 31, 2012   56,431,207us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of warrants to purchase common stock, value 1,882thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock 3thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,879thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Exercise of warrants to purchase common stock, shares   2,488,518thld_ExerciseOfWarrantsToPurchaseSharesOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock pursuant to stock plans, value 510us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation   510us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock pursuant to stock plans, shares   312,886us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Stock-based compensation 4,922us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   4,922us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Reclassification of fair value of warrants exercised from liability to equity 11,462us-gaap_AdjustmentsToAdditionalPaidInCapitalOther   11,462us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Change in unrealized gain (loss) on marketable securities 17us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax     17us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
 
Net loss (28,415)us-gaap_NetIncomeLoss       (28,415)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= thld_AccumulatedDeficitMember
Balances, value at Dec. 31, 2013 (23,475)us-gaap_StockholdersEquity 59us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
328,116us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
28us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
(351,678)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= thld_AccumulatedDeficitMember
Balances, shares at Dec. 31, 2013 59,232,611us-gaap_CommonStockSharesOutstanding 59,232,611us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of warrants to purchase common stock, value 4,834thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock 3thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
4,831thld_ExerciseOfWarrantsToPurchaseValueOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Exercise of warrants to purchase common stock, shares   3,437,348thld_ExerciseOfWarrantsToPurchaseSharesOfClassCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock pursuant to stock plans, value 686us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation 1us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
685us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock pursuant to stock plans, shares   228,274us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Stock-based compensation 5,488us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   5,488us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Reclassification of fair value of warrants exercised from liability to equity 10,116us-gaap_AdjustmentsToAdditionalPaidInCapitalOther   10,116us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Change in unrealized gain (loss) on marketable securities (41)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax     (41)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
 
Net loss (21,584)us-gaap_NetIncomeLoss       (21,584)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= thld_AccumulatedDeficitMember
Balances, value at Dec. 31, 2014 $ (23,976)us-gaap_StockholdersEquity $ 63us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 349,236us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (13)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
$ (373,262)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= thld_AccumulatedDeficitMember
Balances, shares at Dec. 31, 2014 62,898,233us-gaap_CommonStockSharesOutstanding 62,898,233us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember