Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 35,851	$ 24,874
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	5,775	5,641
Bad debt expense, net of recoveries	1,766	734
Adjustment to contingent earnout liability	1,609	616
Other	(1,244)	195
Changes in assets and liabilities, net of acquisitions and divestitures:
Accounts receivable, net	(64,111)	(46,077)
Other assets	(2,571)	1,088
Accounts payable	5,501	1,285
Income taxes payable	15,413	17,837
Accrued personnel costs	(15,262)	(18,800)
Other liabilities	(3,366)	(1,767)
Operating cash flows used in continuing operations	(20,639)	(14,374)
Operating cash flows provided by (used in) discontinued operations	139	(118)
Net cash used in operating activities	(20,500)	(14,492)
Cash flows from investing activities:
Business acquisitions and purchases of client lists, net of cash acquired	(15,568)	(4,344)
Purchases of client fund investments	(6,170)	(10,418)
Proceeds from the sales and maturities of client fund investments	3,345	3,425
Increase in funds held for clients	57,827	61,922
Additions to property and equipment	(2,641)	(1,760)
Other	662	22
Net provided by investing activities	37,455	48,847
Cash flows from financing activities:
Proceeds from bank debt	274,900	139,700
Payment of bank debt	(238,700)	(118,400)
Payment for acquisition of treasury stock	(558)	(2,271)
Decrease in client funds obligations	(54,928)	(54,802)
Proceeds from exercise of stock options	2,271	2,453
Payment of contingent consideration of acquisitions	(3,223)	(3,231)
Other	(58)	(103)
Net cash used in financing activities	(20,296)	(36,654)
Net decrease in cash, cash equivalents and restricted cash	(3,341)	(2,299)
Cash, cash equivalents and restricted cash at beginning of year	33,409	31,374
Cash, cash equivalents and restricted cash at end of period	$ 30,068	$ 29,075