Consolidated Condensed Statement of Shareholders' Equity (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2009	$ 89,735	$ 27,858	$ 2,923	$ 70,172	$ 0	$ (11,218)
Balance (in shares) at Dec. 31, 2009		18,572				1,477
Net loss	(11,930)	0	0	(11,930)	0	0
Treasury stock reacquired	(76)	0	0	0	0	(76)
Treasury stock reacquired (in shares)						21
Retirement plans	(8)	0	(12)	0	0	4
Retirement plans (in shares)						(1)
Exercise of stock options	671	0	(1,146)	0	0	1,817
Exercise of stock options (in shares)						(241)
Restricted stock	477	0	(352)	0	0	829
Restricted stock (in shares)						(110)
Tax (expense)/benefit of stock options	(60)	0	(60)	0	0	0
Balance at Dec. 31, 2010	78,809	27,858	1,353	58,242	0	(8,644)
Balance (in shares) at Dec. 31, 2010		18,572				1,146
Net loss	(11,242)	0	0	(11,242)	0	0
Treasury stock reacquired	(616)	0	0	0	0	(616)
Treasury stock reacquired (in shares)						162
Retirement plans	(52)	0	(19)	0	(69)	36
Retirement plans (in shares)						(5)
Exercise of stock options	598	0	(1,336)	0	0	1,934
Exercise of stock options (in shares)						(275)
Restricted stock	548	0	131	0	0	417
Restricted stock (in shares)						(54)
Tax (expense)/benefit of stock options	14	0	14	0	0	0
Balance at Jun. 30, 2011	$ 68,059	$ 27,858	$ 143	$ 47,000	$ (69)	$ (6,873)
Balance (in shares) at Jun. 30, 2011		18,572				974