CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016		Sep. 30, 2015
Operating activities
Net loss	$ (11,884)		$ (31,211)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation	4,610		5,166
Amortization of internally developed software	2,180		1,850
Amortization of intangible assets	2,350		2,308
Loss on disposal of property and equipment	2		19
Unrealized foreign currency gains	(268)		(203)
Noncash interest expense related to debt agreements	18		36
Stock-based compensation related to equity awards and restricted stock	8,592		12,040
Provision for bad debts	852		776
Deferred income tax benefits	0		(307)
Excess tax benefits from stock-based award activities	0		(9)
Payment of contingent consideration for prior acquisition	(93)		0
Changes in operating assets and liabilities, net of effect of acquisitions
Accounts receivable	560		(3,386)
Prepaid expenses and other current assets	309		(1,750)
Other assets	(340)		407
Accounts payable	246		(1,073)
Deferred revenues	(280)		(689)
Accrued expenses and other current liabilities	(2,050)		2,426
Net cash provided by (used in) operating activities	4,804		(13,600)
Investing activities
Purchases of property and equipment	(1,154)		(8,217)
Proceeds from disposal of property and equipment	3		0
Capitalization of internally developed software	(4,050)		(4,107)
Acquisitions of businesses, net of cash acquired	0		(7,509)
Net cash used in investing activities	(5,201)		(19,833)
Financing activities
Repayment of notes payable	(1,223)		(2,967)
Debt issuance costs	0		(53)
Repurchase of unvested shares	0		(2)
Proceeds from exercise of common stock options	350		1,107
Proceeds from employee stock purchase plan, net	592		995
Stock issuance costs	0		(51)
Excess tax benefits from stock-based award activities	0		9
Net cash used in financing activities	(281)		(962)
Effect of foreign exchange rate changes on cash and cash equivalents	(206)		(526)
Net decrease in cash and cash equivalents	(884)		(34,921)
Beginning of period	37,326	[1]	68,253
End of period	36,442		33,332
Supplemental disclosure of noncash investing and financing activities
Acquisition of equipment through capital leases	1,283		1,905
Purchases of property and equipment recorded in accounts payable and accrued expenses	9		712
Issuance of common stock under employee stock purchase plan	328		548
Issuance of common stock in connection with acquisitions of businesses	$ 0		$ 4,337

[1] Derived from our audited consolidated financial statements as of December 31, 2015.