XML 77 R65.htm IDEA: XBRL DOCUMENT v3.4.0.3
Fair Value Measurements - Changes in Level 3 Assets Measured at Estimated Fair Value on Recurring Basis (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation Calculation Roll Forward    
Balance at the beginning of the year $ 21,124 $ 28,459
Purchases, issuances and settlements (4) (744)
Sales (299) (1,729)
Gains included in earnings 100 1,729
Total unrealized (losses) gains (100) (589)
Balance at the end of the period $ 20,821 $ 27,126