CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
OPERATING ACTIVITIES:
Net loss	$ (7,412)	$ (2,006)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation expense	5,906	5,904
Depreciation	5,660	4,215
Amortization of purchased intangibles	4,169	2,133
Deferred income taxes and other non-cash tax items	(1,114)	(658)
Provision for doubtful accounts, net	1,037	979
Changes in operating assets and liabilities:
Accounts receivable	(1,913)	(5,230)
Prepaid expenses and other current assets	(2,902)	(4,599)
Other assets	(16)	394
Accounts payable	1,817	(1,700)
Accrued expenses and other current liabilities	(5,516)	(287)
Deferred revenue	351	(1,926)
Other liabilities	263	(365)
Net cash provided by (used in) operating activities	330	(3,146)
INVESTING ACTIVITIES:
Purchases of property and equipment, including capitalized software	(8,442)	(4,322)
Increase (Decrease) in Restricted Cash	(5,464)	0
Investment in technology licenses	0	(3,174)
Payments for acquisitions and intangible assets, net of cash acquired	(150)	(2,452)
Net cash used in investing activities	(14,056)	(9,948)
FINANCING ACTIVITIES:
Excess tax benefit from the exercise of employee stock options	757	0
Proceeds from issuance of common stock in connection with the exercise of options	3,105	3,922
Repurchase of common stock	(2,534)	(12,163)
Net cash provided by (used in) financing activities	1,328	(8,241)
EFFECT OF FOREIGN EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	65	663
CHANGE IN CASH AND CASH EQUIVALENTS	(12,333)	(20,672)
CASH AND CASH EQUIVALENTS - Beginning of the period	49,372	91,906
CASH AND CASH EQUIVALENTS - End of the period	37,039	71,234
SUPPLEMENTAL DISCLOSURE OF OTHER CASH FLOW INFORMATION:
Cash paid for income taxes	1,122	1,843
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Purchase of property and equipment recorded in accounts payable	580	407
Noncash of Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Contingent Earn-Out	0	1,810
Acquisition costs recorded in accrued expenses	$ 0	$ 250