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	4,145	4,427
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)	46,000
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)	(9,000)
Release of restricted stock	(1)	(139)	0	0	(140)
Release of restricted stock (in shares)	(9,000)
Share-based compensation	0	329	0	0	329
Tax benefit from stock plan transactions	0	575	0	0	575
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
Balance at Mar. 31, 2011	1,010	54,504	(21,637)	76,442	110,319
Balance (in shares) at Mar. 31, 2011	10,104,000
Comprehensive income:
Comprehensive income	0	0	228	1,437	1,665
Issuance of common stock through stock plan transactions	20	1,307	0	0	1,327
Issuance of common stock through stock plan transactions (in shares)	206,000
Issuance of restricted stock	2	(2)	0	0	0
Issuance of restricted stock (in shares)	16,000
Repurchased shares	0	(25)	0	0	(25)
Repurchased shares (in shares)	(2,000)
Forfeiture of restricted stock	(1)	1	0	0	0
Forfeiture of restricted stock (in shares)	(9,000)
Share-based compensation	0	142	0	0	142
Tax benefit from stock plan transactions	0	351	0	0	351
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
Balance at Dec. 31, 2011	1,032	55,528	(27,430)	85,191	114,321
Balance (in shares) at Dec. 31, 2011	10,322,000				10,321,749
Comprehensive income:
Comprehensive income	0	0	(315)	(4,288)	(4,603)
Issuance of common stock through stock plan transactions	3	230	0	0	233
Issuance of common stock through stock plan transactions (in shares)	28,000
Issuance of restricted stock	13	(13)	0	0	0
Issuance of restricted stock (in shares)	129,000
Forfeiture of restricted stock	(1)	1	0	0	0
Forfeiture of restricted stock (in shares)	(5,000)
Release of restricted stock	(1)	(155)	0	0	(156)
Release of restricted stock (in shares)	(15,000)
Share-based compensation	0	351	0	0	351
Common stock subject to recession rights	0	804	0	0	804
Tax benefit from stock plan transactions	0	(34)	0	0	(34)
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				10,459,394
Balance at Mar. 31, 2012	1,045	55,738	(27,474)	86,982	116,291
Balance (in shares) at Mar. 31, 2012	10,447,000
Comprehensive income:
Comprehensive income	0	0	(271)	(6,079)	(6,350)
Issuance of common stock through stock plan transactions	2	118	0	0	120
Issuance of common stock through stock plan transactions (in shares)	17,000
Issuance of restricted stock	0	0	0	0	0
Issuance of restricted stock (in shares)	2,000
Forfeiture of restricted stock	(1)	1	0	0	0
Forfeiture of restricted stock (in shares)	(6,000)
Release of restricted stock	0	(10)	0	0	(10)
Release of restricted stock (in shares)	(1,000)
Share-based compensation	0	175	0	0	175
Common stock subject to recession rights	0	724	0	0	724
Tax benefit from stock plan transactions	0	(34)	0	0	(34)
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				10,459,394