CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Trade accounts receivable-billed, allowance	$ 2,798	$ 2,359
Property and equipment, accumulated depreciation	135,345	129,522
Accumulated Amortization	168,905	152,886
Long-term debt, unamortized original issue discount	17,116	19,950
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000	100,000
Common stock, shares outstanding	34,092	33,745
Treasury stock, shares	32,030	32,030
Software
Accumulated Amortization	83,146	77,504
Client contracts
Accumulated Amortization	$ 85,759	$ 75,382