Financial Statement Detail (Details 2) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended	6 Months Ended
	Jul. 15, 2014	Apr. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Summary of prepaid expenses and other assets
Prepaid contract expense			$ 8,355,000	$ 8,355,000	$ 10,139,000
Deferred commissions			6,171,000	6,171,000	6,552,000
Debt issuance costs			1,417,000	1,417,000	1,417,000
Prepaid income tax			172,000	172,000	2,659,000
Other			10,392,000	10,392,000	9,347,000
Total prepaid expenses and other			26,507,000	26,507,000	30,114,000
Summary of other assets
Prepaid contract expense, long-term			4,200,000	4,200,000	4,466,000
Long-term deferred commissions			3,305,000	3,305,000	4,098,000
Debt issuance costs			4,191,000	4,191,000	4,899,000
Deposits			2,919,000	2,919,000	2,608,000
Other			148,000	148,000	1,301,000
Total other assets			14,763,000	14,763,000	17,372,000
Restricted cash balance			1,500,000	1,500,000	1,300,000
Cash dividends declared per common share (in dollars per share)		$ 0.13	$ 0.13	$ 0.13
Payment of quarterly cash dividend	6,700,000
Summary of accrued liabilities
Salaries and benefits payable			19,826,000	19,826,000	26,425,000
Accrued dividend equivalents on restricted stock units			2,766,000	2,766,000	3,171,000
Deferred rent, current portion			2,208,000	2,208,000	2,138,000
Accrued restructuring, current portion			1,015,000	1,015,000	998,000
Other			11,856,000	11,856,000	8,893,000
Total accrued liabilities			$ 37,671,000	$ 37,671,000	$ 41,625,000
Per RSU amount that holders of RSUs will receive upon vesting per equity award modification (in dollars per share)				$ 9.00