Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net (loss) income	$ (1,684)	$ 5,678
Adjustments to reconcile net (loss) income to net cash from operating activities:
Depreciation and amortization	3,659	2,904
Stock-based compensation expense	1,417	1,419
Deferred income taxes	30	478
Bad debt provision	538	175
Amortization of Implementation Cost	125	0
Change in fair value of contingent consideration	0	(1,040)
Other operating activities	52	52
Change in assets:
Accounts receivable and unbilled revenue	24,165	(4,680)
Inventories	2,131	(226)
Prepaid expenses and other assets	2,941	(1,167)
Change in liabilities:
Accounts payable	(20,922)	(8,396)
Accrued expenses and other liabilities	21,857	4,923
Net cash provided by operating activities	34,309	120
Cash flows from investing activities
Purchases of property and equipment	(2,874)	(3,042)
Net cash used in investing activities	(2,874)	(3,042)
Cash flows from financing activities
Net (repayments) borrowings from revolving credit facilities	(9,023)	6,519
Net short-term secured repayments	(1,986)	(801)
Repurchases of common stock	(8,048)	(4,342)
Proceeds from exercise of stock options	7	189
Other financing activities	(67)	(95)
Net cash (used in) provided by financing activities	(19,117)	1,470
Effect of exchange rate changes on cash and cash equivalents	594	448
Increase (decrease) in cash and cash equivalents	12,912	(1,004)
Cash and cash equivalents, beginning of period	30,562	30,924
Cash and cash equivalents, end of period	$ 43,474	$ 29,920