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 (loss)	$ 1,138	$ (5,270)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	5,017	5,875
Amortization of deferred loan costs	0	(100)
Stock-based compensation expense	3,224	4,530
Loss on sale of assets/investments	0	1,561
Deferred income taxes	(1,475)	61
Foreign currency transaction (gains) losses on short-term intercompany balances	(976)	1,930
Changes in operating assets and liabilities:
Restricted cash	(51)	(45)
Billed receivables	(451)	6,843
Unbilled receivables	(18)	1,815
Prepaid expenses and other current assets	(1,274)	211
Other assets	(44)	(40)
Accounts payable and accrued expenses	1,287	(822)
Accrued payroll and related expenses	(35)	(2,861)
Refund liabilities	44	(581)
Deferred revenue	(161)	(645)
Other long-term liabilities	(51)	(99)
Net cash provided by operating activities	6,174	12,363
Cash flows from investing activities:
Purchases of property and equipment, net of disposal proceeds	(4,648)	(3,169)
Net cash used in investing activities	(4,648)	(3,169)
Cash flows from financing activities:
Restricted stock repurchased from employees for withholding taxes	(218)	(311)
Proceeds from option exercises	132	45
Repurchase of common stock	(3,762)	(17,261)
Net cash used in financing activities	(3,848)	(17,527)
Effect of exchange rates on cash and cash equivalents	370	(1,729)
Net decrease in cash and cash equivalents	(1,952)	(10,062)
Cash and cash equivalents at beginning of period	15,122	25,735
Cash and cash equivalents at end of period	13,170	15,673
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	40	51
Cash paid during the period for income taxes, net of refunds received	$ 1,068	$ 734