Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Detail) - Condensed Consolidating Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net cash provided by operating activities	$ 4,799	$ 6,266
Investing activities:
Cash paid for acquisitions, net		(187,303)
Purchases of equipment and leasehold improvements, net	(552)	(1,968)
Working capital and other settlements for acquisitions	908	(325)
Net cash provided by (used in) investing activities	356	(189,596)
Financing activities:
Borrowings under credit facilities	11,000	165,000
Proceeds from the exercise of options and warrants	50	263
Purchases of stock for treasury	(387)
Excess tax benefit related to share-based compensation		438
Payment of deferred financing costs	(414)	(445)
Repayment of subordinated unsecured notes payable	(546)	(361)
Net borrowings (repayments) under working capital facilities	(3,789)	130
Repayment under credit facilities	(11,000)
Intercompany investments and other	(95)	(18)
Net cash provided by (used in) financing activities	(5,181)	165,007
Exchange rate impact on cash and cash equivalents	76	80
Net increase (decrease) in cash and cash equivalents	50	(18,243)
Cash and cash equivalents, beginning of period	8,416	33,624
Cash and cash equivalents, end of period	8,466	15,381
Guarantor Subsidiaries [Member]
Net cash provided by operating activities	1,398	4,953
Investing activities:
Cash paid for acquisitions, net		(185,000)
Purchases of equipment and leasehold improvements, net	(407)	(1,872)
Working capital and other settlements for acquisitions	47	49
Net cash provided by (used in) investing activities	(360)	(186,823)
Financing activities:
Excess tax benefit related to share-based compensation		438
Repayment of subordinated unsecured notes payable	(546)	(361)
Intercompany investments and other	(846)	164,800
Net cash provided by (used in) financing activities	(1,392)	164,877
Net increase (decrease) in cash and cash equivalents	(354)	(16,993)
Cash and cash equivalents, beginning of period	6,044	31,192
Cash and cash equivalents, end of period	5,690	14,199
Non-Guarantor Subsidiaries [Member]
Net cash provided by operating activities	3,401	1,313
Investing activities:
Cash paid for acquisitions, net		(2,303)
Purchases of equipment and leasehold improvements, net	(145)	(96)
Working capital and other settlements for acquisitions	861	(374)
Net cash provided by (used in) investing activities	716	(2,773)
Financing activities:
Net borrowings (repayments) under working capital facilities	(3,789)	130
Net cash provided by (used in) financing activities	(3,789)	130
Exchange rate impact on cash and cash equivalents	76	80
Net increase (decrease) in cash and cash equivalents	404	(1,250)
Cash and cash equivalents, beginning of period	2,372	2,432
Cash and cash equivalents, end of period	2,776	1,182
Parent Company [Member]
Financing activities:
Borrowings under credit facilities	11,000	165,000
Proceeds from the exercise of options and warrants	50	263
Purchases of stock for treasury	(387)
Payment of deferred financing costs	(414)	(445)
Repayment under credit facilities	(11,000)
Intercompany investments and other	$ 751	$ (164,818)