Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 78,709		$ 192,563
Investments	46	[1]	490	[1],[2]
Customer funds	1,097
Customer funds receivable	18,695
Accounts receivable, net of allowances of $5,102 and $3,258 as of December 31, 2011 and 2010, respectively	37,588		24,273
Deferred tax assets	9,171		125
Prepaid expenses and other current assets	23,011		17,804
Total current assets	168,317		235,255
Investments - long-term	89,000		2,254
Property and equipment, net	21,637		18,875
Software and website developments costs, net	37,341		29,875
Intangible assets, net	96,441		23,163
Goodwill	200,840		136,408
Deferred tax assets	34,421		1,015
Other long-term assets	12,356		12,118
Total assets	660,353		458,963
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	7,792		5,241
Accrued compensation and benefits	17,915		10,823
Accrued liabilities - other	15,487		12,511
Customer funds payable	19,792
Deferred revenue	9,115		5,010
Deferred tax liabilities	3,443		411
Capital leases payable	255		317
Total current liabilities	73,799		34,313
Long-term liabilities
Capital leases payable	107		165
Deferred tax liabilities	70,087		9,488
Deferred revenue	6,730		3,254
Due to acquirees	10,493
Other liabilities	4,381		2,826
Total long-term liabilities	91,798		15,733
Total liabilities	165,597		50,046
Commitments and contingencies (Note 13)
Stockholders' equity
Preferred stock, $0.01 par value; 10,000,000 shares authorized and no shares issued and outstanding as of December 31, 2011 and 2010
Common stock, $0.01 par value; 175,000,000 shares authorized; 44,957,890 shares issued and 41,858,697 shares outstanding as of December 31, 2011; and 43,748,237 shares issued and 40,673,042 shares outstanding as of December 31, 2010	450		437
Treasury stock, at cost, 3,099,193 and 3,075,195 shares as of December 31, 2011 and 2010, respectively	(51,567)		(51,083)
Additional paid-in capital	486,284		463,614
Accumulated other comprehensive income	6,363		7,858
Retained earnings (accumulated deficit)	53,226		(11,909)
Total stockholders' equity	494,756		408,917
Total liabilities and stockholders' equity	$ 660,353		$ 458,963

[1] As of December 31, 2011 and 2010, Level 1 short-term investments include an investment in a tax-advantaged preferred security, for which we determined fair value based on the quoted market price of an underlying security.

[2] Level 3 short-term investments as of December 31, 2010 included an auction rate security invested in a tax-exempt state government obligation that was valued at par of $0.4 million, or 0.1% of our total assets. Our intent was not to hold the auction rate security invested in a tax-exempt state government obligation to maturity, but rather to use the interest reset feature to provide liquidity. In October 2010, $1.1 million of this security was redeemed by the issuer at par. Due to continued failures in the marketplace auctions, we held the remaining $0.4 million auction rate security until the maturity date in September 2011, when it was redeemed by the issuer at par.