Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total
Balance at Dec. 31, 2013	$ 105	$ 167,869	$ (4,716)	$ 149,754	$ 313,012
Balance (in shares) at Dec. 31, 2013	10,495,856
Increase (Decrease) in Stockholders' Equity
Stock based compensation		4,174			4,174
Exercise of warrant	$ 1	(1)
Exercise of warrant (in shares)	73,422
Common stock issued for stock compensation plans, net of shares withheld and withholding paid for employee taxes	$ 1	(1,521)			(1,520)
Common stock issued for stock compensation plans, net of shares withheld and withholding paid for employee taxes (in shares)	104,014
Net income				8,099	8,099
Other comprehensive income (loss)			(19,231)		(19,231)
Balance at Dec. 31, 2014	$ 107	170,521	(23,947)	157,853	304,534
Balance (in shares) at Dec. 31, 2014	10,673,292
Increase (Decrease) in Stockholders' Equity
Stock based compensation		1,584			1,584
Exercise of warrant	$ 7	6,863			$ 6,870
Exercise of warrant (in shares)	719,075				73,422
Common stock issued for stock compensation plans, net of shares withheld and withholding paid for employee taxes	$ 1	(949)			$ (948)
Common stock issued for stock compensation plans, net of shares withheld and withholding paid for employee taxes (in shares)	74,031
Net income				1,100	1,100
Other comprehensive income (loss)			(5,441)		(5,441)
Balance at Dec. 31, 2015	$ 115	178,019	(29,388)	158,953	307,699
Balance (in shares) at Dec. 31, 2015	11,466,398
Increase (Decrease) in Stockholders' Equity
Stock based compensation		2,303			$ 2,303
Exercise of warrant (in shares)					228,316
Common stock issued for stock compensation plans, net of shares withheld and withholding paid for employee taxes		(364)			$ (364)
Common stock issued for stock compensation plans, net of shares withheld and withholding paid for employee taxes (in shares)	46,881
Net income				1,106	1,106
Other comprehensive income (loss)			(5,830)		(5,830)
Balance at Dec. 31, 2016	$ 115	$ 179,958	$ (35,218)	$ 160,059	$ 304,914
Balance (in shares) at Dec. 31, 2016	11,513,279