Condensed Consolidated Statements of Cash Flows Unaudited - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2018
Cash Flows From Operating Activities:
Net (loss) income	$ (13,159)	$ 5,769
Reconciliation of net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization	10,060	9,624
Goodwill impairment	17,674	0
Stock-based compensation	880	(247)
Changes in operating assets and liabilities:
Accounts receivable, net	6,084	1,571
Unbilled revenues, net	(7,240)	(8,361)
Accrued or prepaid income taxes	(10,355)	1,922
Accounts payable and accrued liabilities	(4,617)	(8,257)
Deferred revenues	2,898	1,578
Accrued retirement costs	(8,638)	(3,393)
Prepaid expenses and other operating activities	(1,565)	317
Net cash (used in) provided by operating activities	(7,978)	523
Cash Flows From Investing Activities:
Acquisitions of property and equipment	(2,708)	(1,737)
Capitalization of computer software costs	(4,803)	(1,605)
Net cash used in investing activities	(7,511)	(3,342)
Cash Flows From Financing Activities:
Cash dividends paid	(3,268)	(3,282)
Proceeds (payments) from shares purchased under employee stock-based compensation plans	10
Proceeds (payments) from shares purchased under employee stock-based compensation plans		(110)
Repurchases of common stock	(2,666)	(16,418)
Increases in revolving credit facility borrowings	65,179	30,385
Payments on revolving credit facility borrowings	(11,910)	(11,578)
Increases in finance lease obligations	138	0
Payments on finance lease obligations	(2)	(54)
Acquisition of noncontrolling interests	(292)		$ 0
Dividends paid to noncontrolling interests	0	(84)
Net cash provided by (used in) financing activities	47,189	(1,141)
Effects of exchange rate changes on cash and cash equivalents	(392)	515
Increase (decrease) in cash and cash equivalents	31,308	(3,445)
Cash and cash equivalents at beginning of year	51,802	53,119
Cash and cash equivalents at end of period	$ 83,110	$ 49,674	$ 53,119