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	(24,910)	0	0	(24,910)	0	0
Treasury stock reacquired	(635)	0	0	0	0	(635)
Treasury stock reacquired (in shares)						168
Retirement plans	(6)	0	(137)	0	(69)	200
Retirement plans (in shares)						(28)
Exercise of stock options	604	0	(1,362)	0	0	1,966
Exercise of stock options (in shares)						(278)
Restricted stock	672	0	312	0	0	360
Restricted stock (in shares)						(48)
Tax (expense)/benefit of stock options	22	0	22	0	0	0
Balance at Sep. 30, 2011	$ 54,556	$ 27,858	$ 188	$ 33,332	$ (69)	$ (6,753)
Balance (in shares) at Sep. 30, 2011		18,572				960