Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 370,894	$ 359,958
Restricted cash	332	331
Accounts receivable, net	38,899	32,863
Deferred tax assets - current	2,027	1,985
Prepaid expenses and other current assets	10,971	10,135
Total current assets	423,123	405,272
Property and equipment, net	27,691	26,532
Goodwill	97,591	97,636
Acquired intangible assets, net	43,764	42,786
Deferred tax assets	10,624	10,666
Other assets	13,672	16,763
Total assets	616,465	599,655
Current liabilities:
Accounts payable and accrued expenses	43,205	49,419
Customer obligations	280,186	281,153
Short-term contingent payment	3,111	4,265
Other current liabilities	577	1,592
Total current liabilities	327,079	336,429
Long-term debt	29,486	29,448
Long-term contingent payment, net of current portion	1,806	3,802
Deferred tax liability	837
Other non-current liability	1,153	1,844
Total liabilities	360,361	371,523
Stockholders' Equity:
Common stock, $0.001 par value. Authorized 1,000,000 shares; issued 34,746 shares at December 31, 2013 and 35,185 shares at June 30, 2014	36	35
Additional paid-in capital	287,459	270,519
Accumulated deficit	(31,391)	(42,422)
Total stockholders' equity	256,104	228,132
Total liabilities and stockholders' equity	$ 616,465	$ 599,655