Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 30,912		$ 15,930
Accounts receivable, net	30,005		25,988
Prepaid expenses and other current assets	2,943		2,667
Refundable taxes	97		264
Deferred tax assets	1,016		830
Total current assets	64,973		45,679
Property and equipment, net	5,440	[1]	6,005	[1]
Deferred tax assets	25,138		27,677
Intangible and other assets, net	484		611
Goodwill	65,679		65,815
Intangible assets from acquisitions, net	434		3,360
Total assets	162,148		149,147
Current liabilities:
Accounts payable	15,922		12,378
Accrued expenses and other current liabilities	7,988		9,609
Deferred revenue	1,388		2,009
Total current liabilities	25,298		23,996
Other non-current liabilities	2,095		2,216
Total liabilities	27,393		26,212
Commitments and contingencies
Stockholders' equity:
Treasury stock: 402 and 159 shares of Class B stock at December 31, 2012 and 2013, respectively	(2)		(13)
Additional paid-in capital	305,517		295,532
Accumulated deficit	(171,149)		(172,966)
Total stockholders' equity	134,755		122,935
Total liabilities and stockholders' equity	162,148		149,147
Class A
Stockholders' equity:
Common stock	80		98
Class B
Stockholders' equity:
Common stock	$ 309		$ 284

[1] Includes the original cost and accumulated depreciation of fully-depreciated fixed assets which were $15.8 million and $17.4 million at December 31, 2012 and 2013, respectively.