Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 82,588	$ 78,411
Accounts receivable, net of allowance for doubtful accounts of $190 at September 30, 2014 and $171 at December 31, 2013	8,622	8,317
Income tax refunds receivable	818	3,334
Deferred income taxes	3,300	3,557
Prepaid expense and other current assets	3,258	3,394
Total current assets	98,586	97,013
Property and equipment, net	7,712	3,568
Goodwill	179,516	176,350
Intangible assets, net	75,811	76,684
Other assets	2,585	2,744
Total assets	364,210	356,359
Current liabilities:
Accounts payable	2,049	1,112
Accrued expenses and other current liabilities	24,905	20,439
Deferred revenue	6,913	6,767
Total current liabilities	33,867	28,318
Deferred revenue	744	972
Deferred income taxes	34,164	32,600
Reserve for income taxes, net of current portion	2,826	2,496
Accrued pension benefits	4,876	5,098
Commitments and contingencies (Note 15)
Stockholders' equity:
Preferred stock, $0.001 par value, Authorized shares: 10,000,000; Issued and outstanding: none
Common stock, $0.001 par value, Authorized shares: 250,000,000; Issued: 39,825,827 at September 30, 2014 and 39,277,713 at December 31, 2013	39	39
Additional paid-in capital	225,609	209,376
Treasury stock, at cost, 1,167,615 shares at September 30, 2014 and 204,830 shares at December 31, 2013	(28,344)	(2,279)
Retained earnings	92,460	78,741
Accumulated other comprehensive (loss) income	(2,031)	998
Total stockholders' equity	287,733	286,875
Total liabilities and stockholders' equity	$ 364,210	$ 356,359