CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 16,479	$ 12,383	$ 31,649	$ 22,817
Unrealized net gains (losses) on securities:
Unrealized net holding gains arising during period	728	2,900	1,301	10,599
Reclassification adjustment for losses (gains) included in net income	4	(152)	(853)	(1,219)
Other comprehensive income, before tax	732	2,748	448	9,380
Income tax expense related to items of other comprehensive income	292	1,094	179	3,749
Other comprehensive income, net of tax	440	1,654	269	5,631
Comprehensive income	$ 16,919	$ 14,037	$ 31,918	$ 28,448