Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 54,550		$ 35,127
Marketable securities	10,912		11,198
Accounts receivable, net of allowance for doubtful accounts of $3,354 and $3,581 at June 30, 2012, and December 31, 2011 respectively	50,247		37,332
Deferred tax asset	2,212		2,212
Prepaid expenses and other current assets	5,826		5,425
Total current assets	123,747		91,294
Property and equipment, net	5,268		5,474
Intangible assets, net	14,563		17,684
Goodwill	155,244		155,677
Deferred tax asset	9,441		7,488
Other assets	248		331
Total assets	308,511		277,948
Current liabilities
Accounts payable	16,212		9,514
Accrued expenses and other current liabilities	24,760		16,220
Total current liabilities	40,972		25,734
Warrant liability	1,319		1,150
Deferred tax liability	3,241		4,202
Other long-term liabilities	799		1,092
Total liabilities	46,331		32,178
Redeemable convertible preferred stock
Commitments and contingencies (Note 10)
Stockholders’ equity (deficit)
Additional paid-in capital	6,575		3,296
Cumulative translation adjustment	(2,215)		(977)
Accumulated earnings (deficit)	1,518		(4,050)
Stockholders’ equity (deficit)	5,885		(1,724)
Total liabilities and stockholders’ equity	308,511		277,948
Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	256,295		247,494
Series A Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	7,154		9,702
Series A1 Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	1,915		2,355
Series B Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	8,023		9,888
Series B1 Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	3,226		4,026
Series C Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	14,113		15,372
Series D Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	221,864		206,151
Common Stock
Stockholders’ equity (deficit)
Common Stock	7		7
Common Class A [Member]
Stockholders’ equity (deficit)
Common Stock	0	[1]	0	[1]
Common Class B [Member]
Stockholders’ equity (deficit)
Common Stock	0		0
Pro Forma [Member]
Current assets
Cash and cash equivalents	54,550	[2]
Marketable securities	10,912	[2]
Accounts receivable, net of allowance for doubtful accounts of $3,354 and $3,581 at June 30, 2012, and December 31, 2011 respectively	50,247	[2]
Deferred tax asset	2,212	[2]
Prepaid expenses and other current assets	5,826	[2]
Total current assets	123,747	[2]
Property and equipment, net	5,268	[2]
Intangible assets, net	14,563	[2]
Goodwill	155,244	[2]
Deferred tax asset	9,441	[2]
Other assets	248	[2]
Total assets	308,511	[2]
Current liabilities
Accounts payable	16,212	[2]
Accrued expenses and other current liabilities	24,760	[2]
Total current liabilities	40,972	[2]
Warrant liability	1,319	[2]
Deferred tax liability	3,241	[2]
Other long-term liabilities	799	[2]
Total liabilities	46,331	[2]
Redeemable convertible preferred stock
Commitments and contingencies (Note 10)		[2]
Stockholders’ equity (deficit)
Additional paid-in capital	262,843	[2]
Cumulative translation adjustment	(2,215)	[2]
Accumulated earnings (deficit)	1,518	[2]
Stockholders’ equity (deficit)	262,180	[2]
Total liabilities and stockholders’ equity	308,511	[2]
Pro Forma [Member] | Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	0	[2]
Pro Forma [Member] | Series A Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	0	[2]
Pro Forma [Member] | Series A1 Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	0	[2]
Pro Forma [Member] | Series B Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	0	[2]
Pro Forma [Member] | Series B1 Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	0	[2]
Pro Forma [Member] | Series C Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	0	[2]
Pro Forma [Member] | Series D Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock
Redeemable convertible preferred stock	0	[2]
Pro Forma [Member] | Common Stock
Stockholders’ equity (deficit)
Common Stock	0	[2]
Pro Forma [Member] | Common Class A [Member]
Stockholders’ equity (deficit)
Common Stock	0	[1],[2]
Pro Forma [Member] | Common Class B [Member]
Stockholders’ equity (deficit)
Common Stock	$ 34	[2]

[1] Upon the completion of an initial public offering, we will have two classes of common stock. All existing shares will convert into Class B common stock and shares sold in the initial public offering will be Class A common stock. The rights of the holders of our common stock are identical except with respect to voting and conversion rights.

[2] The unaudited pro forma balance sheet gives effect to the conversion of all outstanding shares of our common stock and our redeemable convertible preferred stock into 33,864,565 shares of Class B common stock upon the completion of an initial public offering.