XML 84 R72.htm IDEA: XBRL DOCUMENT v3.7.0.1
Fair Value Measurements - Changes in Level 3 Assets and Liabilities Measured at Estimated Fair Value on Recurring Basis (Detail) - Fair Value Measurements, Recurring [Member] - Significant Unobservable Inputs (Level 3) [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Privately Issued [Member]    
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Beginning Balance $ 44 $ 74
Total gains (losses) realized/unrealized:    
Settlements (3) (9)
Ending Balance 41 65
Other Assets and Other Liabilities [Member]    
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Beginning Balance 7,325 9,879
Total gains (losses) realized/unrealized:    
Included in earnings 23,940 23,898
Transfers in and/or out of Level 3 (a) (15,063) (16,892)
Ending Balance 16,202 16,885
Changes in unrealized gains included in earnings related to assets still held at end of period $ 15,094 14,539
Collateralized Debt Obligations [Member]    
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Beginning Balance   47,393
Total gains (losses) realized/unrealized:    
Included in other comprehensive income   (2,148)
Settlements   (205)
Ending Balance   $ 45,040