CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Trade accounts receivable, allowance for doubtful accounts	$ 10,536	$ 9,364
Other intangible assets accumulated amortization	98,260	85,098
LIABILITIES AND EQUITY
Current maturities and unamortized debt issuance costs	$ 1,022	$ 2,046
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)	14,848,469	14,655,356
Common stock shares outstanding (in shares)	14,848,469	14,655,356
Treasury stock (in shares)	0	264,297
Series A Preferred Stock [Member]
Shareholders Equity:
Preferred stock, voting rights	1/10th vote per share	1/10th vote per share
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
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
Preferred stock, outstanding (in shares)	1,122	1,122
Series B Convertible Preferred Stock [Member]
Shareholders Equity:
Preferred stock, voting rights	1/10th vote per share	1/10th vote per share
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, stated value (in dollars per share)	100	100
Preferred stock, liquidation preference (in dollars per share)	$ 1,500	$ 1,500
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	15,000	15,000
Preferred stock, outstanding (in shares)	15,000	15,000