Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net loss	$ (3,226)	$ (7,526)	$ (186)
Adjustments to reconcile net loss to net cash provided by operating activities:
Impairment charges	0	0	4,207
Depreciation and amortization	7,810	9,747	13,228
Amortization of deferred loan costs	20	104	193
Stock-based compensation expense	3,926	4,532	6,294
Foreign currency transaction (gains) losses on short-term intercompany balances	2,165	2,003	(13)
Deferred income taxes	(1,112)	1,566	(23)
Other loss from sale of assets	1,191	57	0
Changes in operating assets and liabilities, net of business acquisitions:
Restricted cash	5	4	8
Billed receivables	4,331	(6,351)	4,206
Unbilled receivables	1,305	7,278	2,609
Prepaid expenses and other current assets	705	1,575	(1,326)
Other assets	0	5	17
Accounts payable and accrued expenses	(1,949)	(3,432)	(3,512)
Accrued payroll and related expenses	(3,595)	536	(5,720)
Refund liabilities	2,389	(1,297)	(591)
Deferred revenue	(784)	720	(72)
Noncurrent compensation obligations	0	414	329
Other long-term liabilities	272	112	(1,224)
Net cash provided by operating activities	13,453	10,047	18,424
Cash flows from investing activities:
Business acquisition, net of cash acquired	(520)	0	0
Business divestiture	783	1,100	0
Purchases of property and equipment, net of disposal proceeds	(4,482)	(4,709)	(6,875)
Net cash used in investing activities	(4,219)	(3,609)	(6,875)
Cash flows from financing activities:
Repayments of long-term debt	0	0	(6,000)
Payments for deferred loan costs	(100)	(104)	0
Payments of deferred acquisition consideration	0	(2,208)	(1,902)
Net proceeds from issuance of common stock	0	0	4,118
Repurchase of common stock	(18,071)	(22,685)	0
Restricted stock repurchased from employees for withholding taxes	(312)	(568)	(1,757)
Proceeds from option exercises	91	2,823	916
Net cash used in financing activities	(18,392)	(22,742)	(4,625)
Effect of exchange rates on cash and cash equivalents	(1,455)	(1,661)	(1,030)
Net (decrease) increase in cash and cash equivalents	(10,613)	(17,965)	5,894
Cash and cash equivalents at beginning of period	25,735	43,700	37,806
Cash and cash equivalents at end of period	15,122	25,735	43,700
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	63	132	567
Cash paid during the period for income taxes, net of refunds received	$ 1,085	$ 3,892	$ 3,245