Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ (2,125)	$ 1,138
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	5,628	5,017
Amortization of deferred loan costs	76	0
Stock-based compensation expense	5,362	3,224
Deferred income taxes	0	(1,475)
Foreign currency transaction gains on short-term intercompany balances	(1,927)	(976)
Changes in operating assets and liabilities, net of effects of acquisitions:
Restricted cash	(62)	(51)
Billed receivables	(1,437)	(451)
Unbilled receivables	724	(18)
Prepaid expenses and other current assets	(1,258)	(1,274)
Other assets	342	(44)
Accounts payable and accrued expenses	2,180	1,287
Accrued payroll and related expenses	(2,499)	(35)
Refund liabilities	(163)	44
Deferred revenue	397	(161)
Other long-term liabilities	(1,681)	(51)
Net cash provided by operating activities	3,557	6,174
Cash flows from investing activities:
Business acquisition, net of cash acquired	(10,128)	0
Purchases of property and equipment, net of disposal proceeds	(6,433)	(4,648)
Net cash used in investing activities	(16,561)	(4,648)
Cash flows from financing activities:
Proceeds from revolving facility	12,500	0
Proceeds from revolving facility	(2,500)	0
Payment of deferred loan cost	(157)	0
Restricted stock repurchased from employees for withholding taxes	(100)	(218)
Proceeds from option exercises	862	132
Repurchase of common stock	0	(3,762)
Net cash provided by (used in) financing activities	10,605	(3,848)
Effect of exchange rates on cash and cash equivalents	(1,392)	370
Net (decrease) increase in cash and cash equivalents	(3,791)	(1,952)
Cash and cash equivalents at beginning of period	15,723	15,122
Cash and cash equivalents at end of period	11,932	13,170
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	146	40
Cash paid during the period for income taxes, net of refunds received	$ 668	$ 1,068