CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income		$ 10,369	$ 8,554	$ 7,825	$ 18,923	$ 9,613
Other comprehensive income, net of tax:
Unrealized holding gains (losses) on securities arising during the period, net of income taxes (benefits)	[1]	947	1,565	(1,628)	2,512	(793)
Reclassification adjustment for net gain on sale of securities included in net income, net of income taxes	[2]	(308)	(436)	(82)	(744)	(150)
Net unrealized gain on securities, net of income taxes		639	1,129	(1,710)	1,768	(943)
Comprehensive income		$ 11,008	$ 9,683	$ 6,115	$ 20,691	$ 8,670

[1] Income tax (benefit) on the unrealized gains (losses) on securities was $736,000 for the three months ended June 30, 2016, $1.1 million for the three months ended March 31, 2016, $(1.1) million for the three months ended June 30, 2015, $1.8 million for the six months ended June 30, 2016 and $(556,000) for the six months ended June 30, 2015.

[2] Income tax (benefit) on the reclassification adjustment for net (gains) losses on sale of securities included in net income was $224,000 for the three months ended June 30, 2016, $317,000 for the three months ended March 31, 2016, $57,000 for the three months ended June 30, 2015, $541,000 for the six months ended June 30, 2016 and $105,000 for the six months ended June 30, 2015.