CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities:
Net income	$ 9,883	$ 8,822
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	2,948	2,716
Provision for bad debts	4,601	5,259
Stock-based compensation expense	982	991
Deferred income taxes	(124)	(183)
Impairment of intangibles and other		79
Loss on disposal of assets	204	284
Changes in operating assets and liabilities, net of acquisitions:
Receivables	(12,446)	(7,026)
Prepaid expenses and other assets	(162)	(2,549)
Prepaid income taxes	374	2,478
Accounts payable and accrued expenses	13,110	10,624
Net amounts due to/from governmental entities	(2,209)	1,109
Net cash provided by operating activities	17,161	22,604
Investing activities:
Purchases of property, building and equipment	(2,622)	(2,958)
Cash paid for acquisitions, primarily goodwill and intangible assets	(10,577)	(567)
Other	273
Net cash used in investing activities	(12,926)	(3,525)
Financing activities:
Proceeds from line of credit	4,000	0
Payments on line of credit	(6,000)	(13,000)
Proceeds from employee stock purchase plan	230	210
Payments on debt	(56)	(57)
Noncontrolling interest distributions	(2,185)	(2,242)
Excess tax benefits from vesting of stock awards	651	642
Withholding taxes paid on stock-based compensation	(1,421)	(1,122)
Net cash used in financing activities	(4,781)	(15,569)
Change in cash	(546)	3,510
Cash at beginning of period	6,139	531
Cash at end of period	5,593	4,041
Supplemental disclosures of cash flow information:
Interest paid	749	447
Income taxes paid	$ 4,466	$ 1,787