Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income	$ 17,767	$ 40,679
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation expense	8,848	13,613
Amortization expense	2,765	3,628
Share-based compensation expense	6,981	5,466
Deferred income taxes	4,808	(5,633)
Allowance for doubtful accounts receivable	1,167	6,894
Loss from disposition of discontinued operations	(49)
Other, net	297	39
Changes in assets and liabilities (net of acquisitions):
Accounts receivable, net and contract assets	(21,974)	(18,192)
Prepaid expenses and other assets	(2,431)	2,372
Accounts payable	1,916	(1,507)
Accrued liabilities	2,145	4,086
Accrued compensation-related costs	(23,270)	(27,124)
Income taxes payable	(9,476)	2,324
Lease liabilities and right-of-use assets	(1,410)
Other liabilities	(5,769)	(7,949)
Net cash (used in) provided by operating activities	(17,685)	18,696
Cash flows from investing activities:
Purchases of property and equipment	(8,454)	(7,455)
Acquisitions of businesses, net of cash acquired	(6,120)
Other, net		(19)
Net cash used in investing activities	(14,574)	(7,474)
Cash flows from financing activities:
Issuances of common stock	1,464	2,174
Repurchases of common stock	(74,244)	(18,847)
Dividend payments	(3,920)
Repayments to banks		(172,479)
Borrowings from banks		187,248
Distributions to non-controlling interest holder	(3,600)
Other, net	(3,847)	(6,218)
Net cash used in financing activities	(84,147)	(8,122)
Effect of exchange rate changes on cash and cash equivalents	112	(409)
Net (decrease) increase in cash and cash equivalents	(116,294)	2,691
Cash and cash equivalents at beginning of the period	206,920	8,449
Cash and cash equivalents at end of the period	90,626	11,140
Supplemental Consolidated Cash Flow Information
Interest paid	303	2,610
Income taxes paid, net of refunds	$ 10,378	$ 5,726