Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 3,463	$ 6,274	$ 9,662	$ 4,817
Other comprehensive income (loss):
Change in net actuarial gain	40	123	122	371
Tax effect on change in net actuarial gain	(14)	(43)	(43)	(130)
Unrealized holding (losses) gains arising during the period	(221)	4,721	1,900	16,243
Tax effect on unrealized holding (losses) gains arising during the period	77	(1,652)	(665)	(5,685)
Reclassification adjustment for (losses) gains included in net income	23	(6,950)	122	(9,723)
Tax effect on reclassification adjustment for (losses) gains included in net income	(8)	2,433	(43)	3,403
Other comprehensive (loss) income, net of tax	(103)	(1,368)	1,393	4,479
Comprehensive income	$ 3,360	$ 4,906	$ 11,055	$ 9,296