Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 37,469	$ 35,851
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	5,659	5,775
Bad debt expense, net of recoveries	1,054	1,766
Adjustment to contingent earnout liability	(281)	1,609
Stock-based compensation expense	809	525
Other	(298)	(1,769)
Changes in assets and liabilities, net of acquisitions and divestitures:
Accounts receivable, net	(57,886)	(64,111)
Other assets	1,778	(2,571)
Accounts payable	2,860	5,501
Income taxes payable	14,195	15,413
Accrued personnel costs	(29,978)	(15,262)
Other liabilities	(43)	(3,366)
Operating cash flows used in continuing operations	(24,662)	(20,639)
Operating cash flows (used in) provided by discontinued operations	(91)	139
Net cash used in operating activities	(24,753)	(20,500)
Cash flows from investing activities:
Business acquisitions and purchases of client lists, net of cash acquired	(1,291)	(15,568)
Purchases of client fund investments	(9,470)	(6,170)
Proceeds from the sales and maturities of client fund investments	6,865	3,345
(Decrease) increase in funds held for clients	(395)	616
Additions to property and equipment	(5,452)	(2,641)
Other	7	662
Net cash used in investing activities	(9,736)	(19,756)
Cash flows from financing activities:
Proceeds from bank debt	141,800	274,900
Payment of bank debt	(95,300)	(238,700)
Payment for acquisition of treasury stock	(11,558)	(558)
Decrease in client funds obligations	(23,207)	(54,928)
Proceeds from exercise of stock options	1,400	2,271
Payment of contingent consideration of acquisitions	(2,999)	(3,223)
Other	(111)	(58)
Net cash provided by (used in) financing activities	10,025	(20,296)
Net decrease in cash, cash equivalents and restricted cash	(24,464)	(60,552)
Cash, cash equivalents and restricted cash at beginning of year	130,554	182,262
Cash, cash equivalents and restricted cash at end of period	106,090	121,710
Reconciliation of cash, cash equivalents and restricted cash to the Consolidated Balance Sheets:
Cash and cash equivalents	2,143	295
Restricted cash	27,721	29,773
Cash equivalents included in funds held for clients	76,226	91,642
Cash, cash equivalents and restricted cash at end of period	$ 106,090	$ 121,710