UNAUDITED 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	$ 26,855	$ 9,175
Adjustments to reconcile net income to cash provided by operating activities:
Deferred income tax provision, net	(18,314)	41
Provision for bad debts	349	368
Depreciation and amortization	1,972	2,115
Stock-based compensation expense	2,620	2,260
Defined benefit pension plan expense	216	455
Loss on deferred compensation plan investments, net	89	110
Loss on disposal or impairment of property and equipment	801	5
Contingent consideration liability remeasurement	886	0
Noncash lease expense	1,662
Other	87	91
(Increase) decrease in operating assets
Trade receivables, net	(7,377)	(12,350)
Income tax refund receivable	206	6,341
Prepaid expenses and other current assets	894	91
Other assets, net	(1,493)	69
Increase (decrease) in operating liabilities
Accounts payable and other accrued liabilities	5,841	(2,096)
Accrued payroll costs	380	317
Income taxes payable	2,951	3,388
Other long-term liabilities	(6,836)	(130)
Cash provided by operating activities	11,789	10,250
Cash flows from investing activities:
Capital expenditures	(1,496)	(1,469)
Other	(1,000)	0
Cash used in investing activities	(2,496)	(1,469)
Cash flows from financing activities:
Proceeds from credit facility	78,300	193,400
Payments on credit facility	(67,600)	(186,723)
Payments on other financing arrangements	(540)	(569)
Repurchases of common stock	(14,875)	(12,038)
Cash dividend	(4,406)	(2,973)
Other	(25)	0
Cash used in financing activities	(9,146)	(8,903)
Change in cash and cash equivalents	147	(122)
Cash and cash equivalents at beginning of period	112	379
Cash and cash equivalents at end of period	$ 259	$ 257