Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 40,065	$ 34,107	$ 29,759
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Loss from discontinued operations, net of tax	542	896	655
Gain on sale of operations, net of tax	(855)	(84)	(1,303)
Loss on early extinguishment of convertible debt		833	1,529
Depreciation and amortization expense	22,098	20,389	19,831
Amortization of discount on notes and deferred financing costs	523	2,271	4,169
Amortization of discount on contingent earnout liabilities	348	144	128
Bad debt expense, net of recoveries	4,090	5,658	5,484
Adjustment to contingent earnout liability	(1,342)	(2,853)	(6,079)
Deferred income taxes	4,829	1,734	2,043
Employee stock awards	5,725	5,729	6,205
Excess tax benefits from share based payment arrangements	(1,108)	(948)	(503)
Changes in assets and liabilities, net of acquisitions and divestitures:
Restricted cash	(3,019)	3,433	(6,182)
Accounts receivable, net	(19,188)	(15,276)	(6,246)
Other assets	(5,612)	(1,269)	(3,027)
Accounts payable	10,217	(1,288)	(3,826)
Income taxes payable	1,881	(3,674)	(338)
Accrued personnel costs	5,496	(349)	1,643
Other liabilities	5,965	(3,057)	(825)
Net cash provided by continuing operations	70,655	46,396	43,117
Operating cash flows provided by discontinued operations	387	990	801
Net cash provided by operating activities	71,042	47,386	43,918
Cash flows from investing activities:
Business acquisitions and purchases of client lists, net of cash acquired	(42,883)	(14,636)	(45,972)
Purchases of client fund investments	(11,355)	(15,429)	(14,089)
Proceeds from the sales and maturities of client fund investments	9,778	10,664	6,671
Proceeds on sales of divested and discontinued operations	802	2,938	4,537
(Decrease) increase in funds held for clients	(3,193)	15,921	(11,223)
Additions to property and equipment	4,141	7,390	4,837
Collection of notes receivable	998	955	555
Other	(20)	20	24
Net cash used for continuing operations	(50,014)	(6,957)	(64,334)
Investing cash flows provided by discontinued operations		8	416
Net cash used for investing activities	(50,014)	(6,949)	(63,918)
Cash flows from financing activities:
Proceeds from bank debt	416,800	408,800	404,500
Payment of bank debt	(431,200)	(310,400)	(345,600)
Payment on extinguishment of convertible debt	(760)	(88,964)	(30,621)
Payment for acquisition of treasury stock	(9,144)	(36,482)	(28,137)
Increase (decrease) in client funds obligations	5,257	(12,617)	19,624
Payment of contingent consideration of acquisitions	(7,504)	(11,987)	(7,991)
Proceeds from exercise of stock options	8,070	10,728	11,356
Payment of notes payable	(347)	(574)	(1,690)
Deferred financing costs	(6)	(18)	(1,736)
Payment of acquired debt	(658)
Excess tax benefit from exercise of stock awards	1,108	948	503
Net cash (used for) provided by financing activities	(18,384)	(40,566)	20,208
Net increase (decrease) in cash and cash equivalents	$ 2,644	$ (129)	$ 208