Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Cash Deposits Subject to Credit Risk (Detail)

v3.4.0.3
Fair Value Measurements - Schedule of Cash Deposits Subject to Credit Risk (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Dec. 31, 2014
Fair Value Disclosures [Abstract]        
Cash deposits $ 26,585 $ 42,645 $ 65,456 $ 58,199
Restricted cash deposits (included in Other assets) 36,000 36,000    
Total cash deposits 63,000 79,000    
Amount of cash deposits in excess of amounts federally insured $ 58,000 $ 75,000