Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities and Fair Value - Marketable Securities with Unrealized Losses (Detail)

v3.7.0.1
Marketable Securities and Fair Value - Marketable Securities with Unrealized Losses (Detail) - U.S. Government Securities
$ in Thousands
Mar. 31, 2017
USD ($)
Schedule Of Available For Sale Securities [Line Items]  
Marketable securities, in loss position for less than twelve months, Fair Value $ 3,199
Marketable securities, in loss position for less than twelve months, Unrealized Loss $ (1)