CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Trade accounts receivable, net of allowances for doubtful accounts	$ 6,202	$ 3,540
Other intangibles, net of accumulated amortization	$ 26,175	$ 19,603
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock shares issued (in shares)	14,118,220	14,079,608
Common stock shares outstanding (in shares)	14,118,220	14,079,608
Treasury stock (in shares)	65,171	65,171
Series A Preferred Stock [Member]
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock ,voting rights	-	-
Preferred stock, outstanding (in shares)	1,122	1,122
Preferred stock, liquidation preference (in dollars per share)	$ 112	$ 100
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	1,122	1,122
Series B Convertible Preferred Stock [Member]
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock ,voting rights	-	-
Preferred stock, outstanding (in shares)	15,000	15,000
Preferred stock, liquidation preference (in dollars per share)	$ 1,500	$ 100
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	15,000	15,000