CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	$ 15	$ 0
Net income	4,022	(4,758)
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Unrealized gain (loss) on available-for-sale securities, net of tax of $15 and none, respectively	28	(3)
Employee benefit plan:
Actuarial gain on retirement plan, net of tax of none for both periods	0	23
Amortization of prior service cost and actuarial loss for retirement plan included in net periodic pension costs, net of tax of $52 and none, respectively	94	146
Net change for employee benefit plan	94	169
TOTAL OTHER COMPREHENSIVE INCOME	122	166
COMPREHENSIVE INCOME (LOSS)	4,144	(4,592)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	0	0
Other Comprehensive Income (Loss), Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service (Cost) Credit, Tax	$ 52	$ 0