Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity	$ 107,403	$ 169	$ 65,120	$ 73,425	$ (31,311)
Net income	21,570	0	0	21,570	0
Net current-period other comprehensive loss	5,229	0	0	0	5,229
Exercise of stock options	302	1	301	0	0
Payment of dividends	(4,246)	0	0	(4,246)	0
Stock-based compensation cost	738	0	738	0	0
Tax benefit on stock options	153	0	153	0	0
Stockholders' Equity	131,149	170	66,312	90,749	(26,082)
Net income	22,444	0	0	22,444	0
Net current-period other comprehensive loss	(10,799)	0	0	0	(10,799)
Exercise of stock options	1,061	2	1,059	0	0
Stock-based compensation cost	579	0	579	0	0
Tax benefit on stock options	85	0	85	0	0
Stockholders' Equity	144,519	172	68,035	113,193	(36,881)
Net income	8,264	0	0	8,264	0
Net current-period other comprehensive loss	(13,168)	0	0	0	(13,168)
Exercise of stock options	159	1	158	0	0
Stock-based compensation cost	1,025	0	1,025	0	0
Tax benefit on stock options	116	0	116	0	0
Stockholders' Equity	$ 140,915	$ 173	$ 69,334	$ 121,457	$ (50,049)