Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities:
Net Income	$ 9,526	$ 25,589	$ 27,223
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	40,513	44,079	41,658
Goodwill and intangible asset impairment charges	17,484	1,056	19,598
Deferred income taxes	3,040	7,947	(2,358)
Loss on disposition of business line	0	20,270	0
Stock-based compensation costs	4,109	6,196	6,661
Changes in operating assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, net	5,922	7,844	(14,844)
Unbilled revenues, net	5,302	(18,588)	(2,644)
Accrued or prepaid income taxes	(5,985)	2,270	(508)
Accounts payable and accrued liabilities	(6,946)	(8,952)	(14,678)
Deferred revenues	(281)	(4,969)	(3,482)
Accrued retirement costs	3,387	(25,896)	(15,364)
Prepaid expenses and other operating activities	(855)	(4,427)	(505)
Net cash provided by operating activities	75,216	52,419	40,757
Cash Flows from Investing Activities:
Acquisitions of property and equipment	(8,688)	(14,052)	(19,044)
Capitalization of computer software costs	(12,436)	(15,968)	(25,867)
Cash proceeds from disposition of business line	0	39,187	0
Payments for business acquisitions, net of cash acquired	(2,296)	(2,500)	(36,029)
Other investing activities	0	(218)	(926)
Net cash (used in) provided by investing activities	(23,420)	6,449	(81,866)
Cash Flows from Financing Activities:
Cash dividends paid	(13,171)	(13,528)	(13,700)
Payments related to shares received for withholding taxes under stock-based compensation plans	(827)	(1,110)	(1,933)
Proceeds from shares purchased under employee stock-based compensation plans	2,104	1,387	1,154
Repurchases of common stock	(26,210)	(10,409)	(7,422)
Increases in short-term and revolving credit facility borrowings	66,197	101,428	94,407
Payments on short-term and revolving credit facility borrowings	(80,948)	(135,433)	(58,490)
Payments on finance lease obligations	(93)
Payments on finance lease obligations		(477)	(1,233)
Capitalized loan costs	0	(23)	(1,926)
Dividends paid to noncontrolling interests	(458)	(574)	(514)
Net cash (used in) provided by financing activities	(53,406)	(58,739)	10,343
Effects of exchange rate changes on cash and cash equivalents	293	(1,021)	3,208
Decrease in Cash and Cash Equivalents	(1,317)	(892)	(27,558)
Cash and Cash Equivalents at Beginning of Year	53,119	54,011	81,569
Cash and Cash Equivalents at End of Year	$ 51,802	$ 53,119	$ 54,011