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Condensed Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Statement of Comprehensive Income [Abstract]    
Net income $ 12,391 $ 11,025
Other comprehensive income, net of tax:    
Unrealized gains on investment securities arising during the period, net of income tax expense for three months of $348 and $2,304, respectively 567 3,711
Total other comprehensive income 567 3,711
Total comprehensive income $ 12,958 $ 14,736