Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income - Activity in Accumulated Other Comprehensive Income (Detail)

v3.3.0.814
Accumulated Other Comprehensive Income - Activity in Accumulated Other Comprehensive Income (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance at beginning of period $ 423 $ (2,150) $ 463 $ (9,380)
Other comprehensive income (loss) before reclassification 3,783 (2,848) 7,839 6,167
Reclassification from accumulated other comprehensive income (2,048) (67) (6,144) (1,852)
Other comprehensive income (loss), net of tax 1,735 (2,915) 1,695 4,315
Balance at end of period 2,158 (5,065) 2,158 (5,065)
Accumulated Net Unrealized Investment Gain (Loss) [Member]        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance at beginning of period (1,079) (5,534) (985) (18,187)
Other comprehensive income (loss) before reclassification 5,064 (4,947) 9,066 9,491
Reclassification from accumulated other comprehensive income (2,048) (67) (6,144) (1,852)
Other comprehensive income (loss), net of tax 3,016 (5,014) 2,922 7,639
Balance at end of period 1,937 (10,548) 1,937 (10,548)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Interest-Only Strip [Member]        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance at beginning of period 16 17 16 16
Other comprehensive income (loss) before reclassification (7) (3) (7) (2)
Reclassification from accumulated other comprehensive income 0 0 0 0
Other comprehensive income (loss), net of tax (7) (3) (7) (2)
Balance at end of period 9 14 9 14
Tax Benefit (Expense) [Member]        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Balance at beginning of period 1,486 3,367 1,432 8,791
Other comprehensive income (loss) before reclassification (1,274) 2,102 (1,220) (3,322)
Reclassification from accumulated other comprehensive income 0 0 0 0
Other comprehensive income (loss), net of tax (1,274) 2,102 (1,220) (3,322)
Balance at end of period $ 212 $ 5,469 $ 212 $ 5,469