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, 2013	Mar. 31, 2012
Net cash provided by (used in) operating activities	$ (1,110)	$ 4,799
Investing activities:
Purchases of equipment and leasehold improvements, net	(1,770)	(552)
Working capital and other settlements for acquisitions		908
Net cash provided by (used in) investing activities	(1,770)	356
Financing activities:
Borrowings under senior secured revolving credit facility	10,000	11,000
Proceeds from the exercise of options and warrants	2,441	50
Excess tax benefit related to share-based compensation	407
Purchases of stock for treasury		(387)
Repayment of subordinated unsecured notes payable		(546)
Payment of deferred financing costs	(52)	(414)
Net borrowings (repayments) under working capital facilities	(800)	(3,789)
Repayment under senior secured revolving credit facility	(10,000)	(11,000)
Intercompany investments and other		(95)
Net cash provided by (used in) financing activities	1,996	(5,181)
Exchange rate impact on cash and cash equivalents	(34)	76
Net increase (decrease) in cash and cash equivalents	(918)	50
Cash and cash equivalents, beginning of period	8,627	8,416
Cash and cash equivalents, end of period	7,709	8,466
Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	(3,794)	1,398
Investing activities:
Purchases of equipment and leasehold improvements, net	(919)	(407)
Working capital and other settlements for acquisitions		47
Net cash provided by (used in) investing activities	(919)	(360)
Financing activities:
Repayment of subordinated unsecured notes payable		(546)
Intercompany investments and other	2,796	(846)
Net cash provided by (used in) financing activities	2,796	(1,392)
Net increase (decrease) in cash and cash equivalents	(1,917)	(354)
Cash and cash equivalents, beginning of period	4,125	6,044
Cash and cash equivalents, end of period	2,208	5,690
Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	2,684	3,401
Investing activities:
Purchases of equipment and leasehold improvements, net	(851)	(145)
Working capital and other settlements for acquisitions		861
Net cash provided by (used in) investing activities	(851)	716
Financing activities:
Net borrowings (repayments) under working capital facilities	(800)	(3,789)
Net cash provided by (used in) financing activities	(800)	(3,789)
Exchange rate impact on cash and cash equivalents	(34)	76
Net increase (decrease) in cash and cash equivalents	999	404
Cash and cash equivalents, beginning of period	4,502	2,372
Cash and cash equivalents, end of period	5,501	2,776
Parent Company [Member]
Financing activities:
Borrowings under senior secured revolving credit facility	10,000	11,000
Proceeds from the exercise of options and warrants	2,441	50
Excess tax benefit related to share-based compensation	407
Purchases of stock for treasury		(387)
Payment of deferred financing costs	(52)	(414)
Repayment under senior secured revolving credit facility	(10,000)	(11,000)
Intercompany investments and other	$ (2,796)	$ 751