Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Cash flows from operating activities:
Net income	$ 7,068	$ 15,189	$ 9,836
Adjustments to reconcile net income to net cash provided by operating     activities:
Gain on change in fair value of contingent consideration, net	0	(677)	(4,438)
Gain on sale of business	(6,064)	(12,126)	0
Depreciation and amortization	7,879	9,482	7,921
Non-cash compensation expense	7,977	5,595	4,310
Deferred income taxes	(2,151)	(1,086)	876
Changes in other operating items, net of acquired amounts:
Accounts and other receivables	15,979	(23,803)	23,092
Unbilled revenue	27,032	23,473	(36,868)
Prepaid expenses and other current assets	1,002	421	705
Accounts payable, accrued expenses and net change in operating leases	3,206	(4,859)	8,110
Deferred revenue	(560)	(326)	(2,094)
Other	(2,376)	2,117	(240)
Net cash provided by operating activities	58,992	13,400	11,210
Cash flows from investing activities:
Additions to property, plant and equipment	(1,630)	(2,315)	(2,834)
Proceeds from Divestiture of Businesses	31,261	20,048	0
Acquisitions, net of cash acquired	0	850	(55,290)
Capitalized software development costs	(102)	(2,632)	(3,544)
Other investing activities	0	0	(86)
Net cash provided by (used in) investing activities	29,529	15,951	(61,754)
Cash flows from financing activities:
Repayment of short-term borrowings	0	0	(37,577)
Proceeds from long-term debt	154,752	178,750	146,000
Repayments of long-term debt	(224,873)	(212,380)	(57,500)
Change in negative cash book balance	(3,701)	1,932	(1,278)
Repurchases of common stock	(1,833)	0	(8,522)
Tax withholding payments for employee stock-based compensation in     exchange for shares surrendered	(325)	(278)	(416)
Cash proceeds from termination of interest rate derivatives	0	0	544
Payment of debt issuance costs	(298)	(303)	(1,231)
Other financing activities	0	0	10
Net cash provided by (used in) financing activities	(76,278)	(32,279)	40,030
Effect of exchange rate changes on cash	2,674	(2,330)	319
Net change in cash	14,917	(5,258)	(10,195)
Cash at beginning of year	8,159	13,417	23,612
Cash at end of year		8,159	13,417
Cash	23,076	8,159	13,417
Cash paid during the year for:
Interest	2,193	5,831	3,741
Income taxes	5,555	4,327	4,528
Non-cash financing activities:
Accrued share repurchases	0	0	(529)
Accrued contingent consideration	$ 0	$ 0	$ 905