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STOCKHOLDERS' EQUITY - Changes to Accumulated Other Comprehensive (Loss) Income by Components (Detail) - Gain (loss) on securities available-for-sale - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]    
Balance at beginning of period $ (11,900) $ (24,117)
Unrealized (loss) gain arising during the period (59,885) 8,746
Reclassification adjustment from other comprehensive income 0 (208)
Tax effect of current period changes 17,637 (2,512)
Total changes, net of taxes (42,248) 6,026
Balance at end of period $ (54,148) $ (18,091)