CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
OPERATING ACTIVITIES:
Net income (loss)	$ (5,487)	$ (3,146)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation expense	8,793	9,558
Depreciation	8,599	6,559
Amortization of purchased intangibles	6,122	3,461
Deferred income taxes and other non-cash tax items	(4,103)	(1,067)
Change in fair value contingent consideration	3,792	0
Provision for doubtful accounts, net	1,688	1,096
Changes in operating assets and liabilities:
Accounts receivable	(2,750)	(4,337)
Prepaid expenses and other current assets	(1,278)	(4,390)
Other assets	85	538
Accounts payable	(2,494)	(2,248)
Accrued expenses and other current liabilities	(2,705)	4,373
Deferred revenue	(1,697)	5,003
Other liabilities	2,300	(469)
Net cash provided by operating activities	10,865	14,931
INVESTING ACTIVITIES:
Purchases of property and equipment, including capitalized software	(11,047)	(6,644)
Increase (Decrease) in Restricted Cash	(5,400)	0
Investment in technology licenses	0	(3,451)
Payments for acquisitions and intangible assets, net of cash acquired	(150)	(2,452)
Net cash used in investing activities	(16,597)	(12,547)
FINANCING ACTIVITIES:
Excess tax benefit from the exercise of employee stock options	796	0
Proceeds from issuance of common stock in connection with the exercise of options	3,758	6,109
Acquisition related payments	(2,366)	(500)
Repurchase of common stock	(4,202)	(12,980)
Net cash used in financing activities	(2,014)	(7,371)
EFFECT OF FOREIGN EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(782)	192
CHANGE IN CASH AND CASH EQUIVALENTS	(8,528)	(4,795)
CASH AND CASH EQUIVALENTS - Beginning of the period	49,372	91,906
CASH AND CASH EQUIVALENTS - End of the period	40,844	87,111
SUPPLEMENTAL DISCLOSURE OF OTHER CASH FLOW INFORMATION:
Cash paid for income taxes	1,497	2,182
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Purchase of property and equipment recorded in accounts payable	277	1,840
Contingent earn-out in connection with acquisitions recorded in accrued expenses	0	1,810
Acquisition costs recorded in accrued expenses	$ 0	$ 125