CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Restricted cash	$ 186	$ 209
Accounts receivable, net of reserves	3,746	4,990
Property and equipment:
Accumulated amortization on intangible assets	65,073	62,134
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	98,643,015	98,442,336
Common stock, shares outstanding (in shares)	98,643,015	98,442,336
Common stock subscribed, shares (in shares)	11,992	14,429
Series A Convertible Preferred Stock [Member]
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000	50,000
Preferred stock, shares issued (in shares)	50,000	0
Preferred stock, shares outstanding (in shares)	50,000	0
Preferred stock, liquidation preference	50,000	0
Series A Non-voting Preferred Stock [Member]
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000	50,000
Preferred stock, shares issued (in shares)	0	0
Purchased and Developed Software [Member]
Property and equipment:
Accumulated amortization on intangible assets	25,133	23,764
Other Intangible Assets [Member]
Property and equipment:
Accumulated amortization on intangible assets	$ 39,940	$ 38,370