CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating activities
Net income	$ 5,095	$ 8,269
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	2,125	1,830
Provision for bad debts	3,362	3,917
Stock-based compensation expense	1,048	888
Deferred income taxes	395	846
Loss on sale of assets		14
Changes in operating assets and liabilities, net of acquisitions:
Receivables	956	(1,237)
Prepaid expenses and other assets	(39)	(664)
Prepaid income taxes	248	3,703
Accounts payable and accrued expenses	(6,428)	(3,178)
Net amounts due to/from governmental entities	(659)	(319)
Net cash provided by operating activities	6,103	14,069
Investing activities
Purchases of property, building and equipment	(1,520)	(1,151)
Cash paid for acquisitions, primarily goodwill and intangible assets and advance payments on acquisitions	(61,159)	(19,655)
Net cash (used in) investing activities	(62,679)	(20,806)
Financing activities
Proceeds from line of credit	60,000	41,500
Payments on line of credit	(12,000)	(38,004)
Proceeds from employee stock purchase plan	184	179
Proceeds from debt issuance		201
Payments on debt issuance	(37)
Noncontrolling interest distributions	(1,768)	(2,509)
Excess tax benefits from vesting of restricted stock	112	11
Redemption of treasury shares	(727)	(607)
Purchase of noncontrolling interest		(350)
Sale of noncontrolling interest	193
Net cash provided by financing activities	45,957	421
Change in cash	(10,619)	(6,316)
Cash at beginning of period	14,014	9,720
Cash at end of period	3,395	3,404
Supplemental disclosures of cash flow information
Interest paid	370	425
Income taxes paid	$ 2,413	$ 10,337