Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 334	$ 2,632
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Gain on change in fair value of contingent consideration, net	(50)	(2,552)
Depreciation and amortization	2,341	1,842
Deferred income taxes	(102)	(108)
Non-cash compensation expense	1,089	1,409
Changes in other operating items:
Accounts and other receivables	6,104	12,817
Unbilled revenue	(2,553)	227
Prepaid expenses and other current assets	(5,600)	(6,024)
Accounts payable and accrued expenses	498	1,643
Deferred revenue	(5,589)	(2,485)
Other	923	5
Net cash (used in) provided by operating activities	(2,605)	9,406
Cash flows from investing activities:
Additions to property, plant and equipment	(542)	(370)
Acquisitions, net of cash acquired	0	(10,000)
Other investing activities	(226)	(834)
Net cash used in investing activities	(768)	(11,204)
Cash flows from financing activities:
Proceeds from short-term borrowings	0	6,022
Proceeds from long-term debt	33,038	0
Repayment of long-term debt	(33,000)	(3,000)
Change in negative cash book balance	(701)	(261)
Repurchases of common stock in the open market	0	(7,790)
Other financing activities	(27)	(50)
Net cash used in financing activities	(690)	(5,079)
Effect of exchange rate changes on cash and cash equivalents	(927)	210
Net decrease in cash	(4,990)	(6,667)
Cash at beginning of period	13,417	23,612
Cash at end of period	8,427	16,945
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	1,552	624
Cash paid during the period for income taxes	$ 816	$ 1,460