Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statements of Comprehensive Income [Abstract]
Net income (loss)	$ 1,651	$ (3,151)	$ 6,199	$ (1,457)
Other comprehensive income (loss):
Change in net actuarial gain	41	124	81	248
Tax effect on change in net actuarial gain	(14)	(43)	(28)	(87)
Unrealized holding gains (losses) arising during the period	3,766	2,623	2,121	11,522
Tax effect on unrealized holding gains (losses) arising during the period	(1,318)	(918)	(742)	(4,033)
Reclassification adjustment for (losses) gains included in net income	284	(1,597)	99	(2,773)
Tax effect on reclassification adjustment for (losses) gains included in net income tax expense	(99)	559	(35)	970
Other comprehensive income (loss), net of tax	2,660	748	1,496	5,847
Comprehensive income (loss)	$ 4,311	$ (2,403)	$ 7,695	$ 4,390