CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Restricted cash	$ 209	$ 392
Accounts receivable, net of reserves	7,293	11,938
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization on intangible assets	58,928
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)	98,579,903	96,688,889
Common stock, shares outstanding (in shares)	98,579,903	96,688,889
Common stock subscribed, shares (in shares)	21,419	26,259
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]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization on intangible assets	22,230	18,591
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization on intangible assets	$ 36,698	$ 34,466