Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 35,920	$ 26,789
Adjustments to reconcile net income to net cash from operating activities:
Depreciation	5,567	3,846
Provision for doubtful accounts	719	565
Deferred taxes	(1,908)	(2,793)
Amortization of intangible assets	19,715	17,531
Stock-based compensation	17,755	9,378
Deferred rent	980	(73)
Other	(292)	553
Change in assets and liabilities, net of the effects of business acquisitions:
Accounts receivable	(22,299)	(6,912)
Prepaid expenses and other assets	(2,874)	(1,456)
Restaurant food liability	11,361	(31,444)
Accounts payable	(4,592)	(633)
Accrued payroll	582	(2,150)
Other accruals	1,799	389
Net cash provided by operating activities	62,433	13,590
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of investments	(187,456)	(154,268)
Proceeds from maturity of investments	210,567	122,856
Capitalized website and development costs	(8,859)	(4,961)
Purchases of property and equipment	(17,083)	(2,866)
Acquisitions of businesses, net of cash acquired	(65,849)	(55,687)
Acquisition of other intangible assets	(250)
Other cash flows from investing activities	(540)
Net cash used in investing activities	(69,470)	(94,926)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchases of common stock	(14,774)
Proceeds from exercise of stock options	11,814	10,689
Excess tax benefits related to stock-based compensation	22,114	21,987
Taxes paid related to net settlement of stock-based compensation awards	(1,205)
Payments for debt issuance costs	(1,477)
Net cash provided by financing activities	16,472	32,676
Net change in cash and cash equivalents	9,435	(48,660)
Effect of exchange rates on cash	(890)	(108)
Cash and cash equivalents at beginning of year	169,293	201,796
Cash and cash equivalents at end of the period	177,838	153,028
SUPPLEMENTAL DISCLOSURE OF NON CASH ITEMS
Fair value of common stock issued for acquisitions		15,980
Cash paid for income taxes	5,757
Capitalized property, equipment and website and development costs in accounts payable at period end	$ 5,911	$ 414