CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2010	$ 1,004	$ 54,138	$ (21,691)	$ 73,734	$ 107,185
Balance (in shares) at Dec. 31, 2010					10,040,000
Comprehensive income:
Comprehensive income	0	0	282	7,423	7,705
Issuance of common stock through stock plan transactions	26	1,687	0	0	1,713
Issuance of common stock through stock plan transactions (in shares)					268,000
Issuance of restricted stock	5	(5)	0	0	0
Issuance of restricted stock (in shares)					50,000
Repurchased shares	(2)	(308)	0	0	(310)
Repurchased shares (in shares)					(21,000)
Forfeiture of restricted stock	(1)	1	0	0	0
Forfeiture of restricted stock (in shares)					(13,000)
Release of restricted stock	(1)	(176)	0	0	(177)
Release of restricted stock (in shares)					(13,000)
Share-based compensation	0	521	0	0	521
Tax benefit from stock plan transactions	0	577	0	0	577
Balance at Sep. 30, 2011	1,031	56,435	(21,409)	81,157	117,214
Balance (in shares) at Sep. 30, 2011					10,311,000
Balance at Jun. 30, 2011	1,031	56,278	(21,409)	77,879	113,779
Balance (in shares) at Jun. 30, 2011					10,315,000
Comprehensive income:
Comprehensive income	0	0	0	3,278	3,278
Issuance of common stock through stock plan transactions (in shares)					4,000
Issuance of restricted stock	0	0	0	0	0
Forfeiture of restricted stock	0	0	0	0	0
Forfeiture of restricted stock (in shares)					(4,000)
Release of restricted stock	0	(37)	0	0	(37)
Release of restricted stock (in shares)					(4,000)
Share-based compensation	0	192	0	0	192
Tax benefit from stock plan transactions	0	2	0	0	2
Balance at Sep. 30, 2011	1,031	56,435	(21,409)	81,157	117,214
Balance (in shares) at Sep. 30, 2011					10,311,000
Balance at Dec. 31, 2011	1,032	55,528	(27,430)	85,191	114,321
Balance (in shares) at Dec. 31, 2011					10,321,749
Comprehensive income:
Comprehensive income	0	0	(329)	(24,882)	(25,211)
Issuance of common stock through stock plan transactions	5	330	0	0	335
Issuance of common stock through stock plan transactions (in shares)					46,000
Issuance of restricted stock	16	(16)	0	0	0
Issuance of restricted stock (in shares)					164,000
Forfeiture of restricted stock	(1)	1	0	0	0
Forfeiture of restricted stock (in shares)					(14,000)
Release of restricted stock	(2)	(161)	0	0	(163)
Release of restricted stock (in shares)					(17,000)
Share-based compensation	0	522	0	0	522
Common stock subject to recession rights	0	764	0	0	764
Tax benefit from stock plan transactions	0	(42)	0	0	(42)
Balance at Sep. 30, 2012	1,050	56,926	(27,759)	60,309	90,526
Balance (in shares) at Sep. 30, 2012					10,501,474
Balance at Jun. 30, 2012	1,046	56,712	(27,745)	80,903	110,916
Balance (in shares) at Jun. 30, 2012					10,459,000
Comprehensive income:
Comprehensive income	0	0	(14)	(20,594)	(20,608)
Issuance of common stock through stock plan transactions	2	100	0	0	102
Issuance of common stock through stock plan transactions (in shares)					18,000
Issuance of restricted stock	3	(3)	0	0	0
Issuance of restricted stock (in shares)					35,000
Forfeiture of restricted stock	0	0	0	0	0
Forfeiture of restricted stock (in shares)					(9,000)
Release of restricted stock	(1)	(6)	0	0	(7)
Release of restricted stock (in shares)					(2,000)
Share-based compensation	0	171	0	0	171
Common stock subject to recession rights	0	(40)	0	0	(40)
Tax benefit from stock plan transactions	0	(8)	0	0	(8)
Balance at Sep. 30, 2012	$ 1,050	$ 56,926	$ (27,759)	$ 60,309	$ 90,526
Balance (in shares) at Sep. 30, 2012					10,501,474