Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income (loss) from continuing operations	$ 905	$ (3,226)	$ (7,526)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	6,879	7,810	9,747
Amortization of deferred loan costs	60	20	104
Stock-based compensation expense	5,123	3,926	4,532
Foreign currency transaction losses on short-term intercompany balances	84	2,165	2,003
Deferred income taxes	(861)	(1,112)	1,566
Other loss from sale of assets	22	1,191	57
Changes in operating assets and liabilities, net of business acquisitions:
Restricted cash	1	5	4
Billed receivables	(3,339)	4,331	(6,351)
Unbilled receivables	(509)	1,305	7,278
Prepaid expenses and other current assets	(1,506)	705	1,575
Other assets	(65)	0	5
Accounts payable and accrued expenses	1,218	(1,949)	(3,432)
Accrued payroll and related expenses	2,606	(3,595)	536
Refund liabilities	67	2,389	(1,297)
Deferred revenue	(5)	(784)	720
Noncurrent compensation obligations	0	0	414
Other long-term liabilities	(562)	272	112
Net cash provided by operating activities	10,118	13,453	10,047
Cash flows from investing activities:
Business acquisition, net of cash acquired	(3,669)	(520)	0
Business divestiture	0	783	1,100
Purchases of property and equipment, net of disposal proceeds	(5,887)	(4,482)	(4,709)
Net cash used in investing activities	(9,556)	(4,219)	(3,609)
Cash flows from financing activities:
Payments for deferred loan costs	0	(100)	(104)
Payments of deferred acquisition consideration	0	0	(2,208)
Proceeds from term loan	3,600	0	0
Repurchase of common stock	(3,772)	(18,071)	(22,685)
Restricted stock repurchased from employees for withholding taxes	(218)	(312)	(568)
Proceeds from option exercises	326	91	2,823
Net cash used in financing activities	(64)	(18,392)	(22,742)
Effect of exchange rates on cash and cash equivalents	103	(1,455)	(1,661)
Net increase (decrease) in cash and cash equivalents	601	(10,613)	(17,965)
Cash and cash equivalents at beginning of period	15,122	25,735	43,700
Cash and cash equivalents at end of period	15,723	15,122	25,735
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	60	63	132
Cash paid during the period for income taxes, net of refunds received	$ 1,407	$ 1,085	$ 3,892