Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 6,376	$ 1,651	$ 11,719	$ 6,199
Other comprehensive income (loss):
Change in net actuarial gain	26	41	52	81
Tax effect on change in net actuarial gain	(9)	(14)	(18)	(28)
Unrealized holding (losses) gains arising during the period	(4,106)	3,766	2,963	2,121
Tax effect on unrealized holding (losses) gains arising during the period	1,437	(1,318)	(1,037)	(742)
Reclassification adjustment for (gains) losses included in net income	(4,992)	284	(5,853)	99
Tax effect on reclassification adjustment for (losses) gains included in net income	1,747	(99)	2,048	(35)
Other comprehensive (loss) income, net of tax	(5,897)	2,660	(1,845)	1,496
Comprehensive income	$ 479	$ 4,311	$ 9,874	$ 7,695