Condensed Consolidated Balance Sheets Parentheticals (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts	$ 9,016	$ 7,460
Intangible asset accumulated amortization	$ 44,687	$ 44,139
Common Stock [Member]
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common stock, shares authorized	19,000,000	19,000,000
Common stock, shares outstanding	9,999,945	9,999,945
Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000