Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Detail) - Condensed Consolidating Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Net cash provided by operating activities	$ 16,222	$ 16,393
Investing activities:
Cash paid for acquisitions, net		(280,542)
Purchases of equipment and leasehold improvements, net	(2,955)	(2,634)
Working capital and other settlements for acquisitions	1,506	(1,636)
Net cash provided by (used in) investing activities	(1,449)	(284,812)
Financing activities:
Borrowings under credit facilities	11,000	264,000
Proceeds from the exercise of options and warrants	328	1,313
Purchases of stock for treasury	(387)
Excess tax benefit related to share-based compensation		1,886
Payment of deferred financing costs	(624)	(1,838)
Repayment of subordinated unsecured notes payable	(759)	(1,027)
Net borrowings (repayments) under working capital facilities	(4,341)	37,794
Repayment under senior secured revolving credit facility	(16,000)	(60,000)
Intercompany investments and other	(95)	(275)
Net cash provided by (used in) financing activities	(10,878)	241,853
Exchange rate impact on cash and cash equivalents	51	148
Net increase (decrease) in cash and cash equivalents	3,946	(26,418)
Cash and cash equivalents, beginning of period	8,416	33,624
Cash and cash equivalents, end of period	12,362	7,206
Guarantor Subsidiaries [Member]
Net cash provided by operating activities	11,578	50,490
Investing activities:
Cash paid for acquisitions, net		(278,239)
Purchases of equipment and leasehold improvements, net	(2,671)	(2,219)
Working capital and other settlements for acquisitions	102	70
Net cash provided by (used in) investing activities	(2,569)	(280,388)
Financing activities:
Excess tax benefit related to share-based compensation		1,886
Repayment of subordinated unsecured notes payable	(759)	(1,027)
Intercompany investments and other	(5,778)	203,200
Net cash provided by (used in) financing activities	(6,537)	204,059
Net increase (decrease) in cash and cash equivalents	2,472	(25,839)
Cash and cash equivalents, beginning of period	6,044	31,192
Cash and cash equivalents, end of period	8,516	5,353
Non-Guarantor Subsidiaries [Member]
Net cash provided by operating activities	4,644	(34,097)
Investing activities:
Cash paid for acquisitions, net		(2,303)
Purchases of equipment and leasehold improvements, net	(284)	(415)
Working capital and other settlements for acquisitions	1,404	(1,706)
Net cash provided by (used in) investing activities	1,120	(4,424)
Financing activities:
Net borrowings (repayments) under working capital facilities	(4,341)	37,794
Net cash provided by (used in) financing activities	(4,341)	37,794
Exchange rate impact on cash and cash equivalents	51	148
Net increase (decrease) in cash and cash equivalents	1,474	(579)
Cash and cash equivalents, beginning of period	2,372	2,432
Cash and cash equivalents, end of period	3,846	1,853
Parent Company [Member]
Financing activities:
Borrowings under credit facilities	11,000	264,000
Proceeds from the exercise of options and warrants	328	1,313
Purchases of stock for treasury	(387)
Payment of deferred financing costs	(624)	(1,838)
Repayment under senior secured revolving credit facility	(16,000)	(60,000)
Intercompany investments and other	$ 5,683	$ (203,475)