Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Details) - Condensed Consolidating Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	$ 3,205	$ (1,110)
Investing activities:
Cash paid for acquisitions, net	(97,153)
Working capital and other settlements for acquisitions	(1,142)
Cash paid for foreign currency net investment hedge	(3,356)
Investing activities:
Purchases of equipment and leasehold improvements, net	(712)	(1,770)
Net cash provided by (used in) investing activities	(103,202)	(1,770)
Financing activities:
Borrowings under senior secured revolving credit facility	121,012	10,000
Proceeds from the exercise of options and warrants	14,637	2,441
Excess tax benefit related to share-based compensation	6,190	407
Net borrowings (repayments) under working capital facilities	4,123	(800)
Payment of deferred financing costs	(225)	(52)
Repayment of subordinated unsecured notes payable	(333)
Repayment under senior secured revolving credit facility	(50,000)	(10,000)
Other	(839)
Net cash provided by (used in) financing activities	95,404	1,996
Exchange rate impact on cash and cash equivalents	268	(34)
Net increase (decrease) in cash and cash equivalents	(4,325)	(918)
Cash and cash equivalents, beginning of period	12,829	8,627
Cash and cash equivalents, end of period	8,504	7,709
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	1,369	(3,794)
Investing activities:
Cash paid for acquisitions, net	(87,615)
Cash paid for foreign currency net investment hedge	(3,356)
Investing activities:
Purchases of equipment and leasehold improvements, net	(402)	(919)
Net cash provided by (used in) investing activities	(92,212)	(919)
Financing activities:
Repayment of subordinated unsecured notes payable	(333)
Intercompany notes and investments and other	91,614
Other	(839)	2,796
Net cash provided by (used in) financing activities	91,281	2,796
Net increase (decrease) in cash and cash equivalents	438	(1,917)
Cash and cash equivalents, beginning of period	760	4,125
Cash and cash equivalents, end of period	1,198	2,208
Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	1,836	2,684
Investing activities:
Cash paid for acquisitions, net	(9,538)
Working capital and other settlements for acquisitions	(1,142)
Investing activities:
Purchases of equipment and leasehold improvements, net	(310)	(851)
Net cash provided by (used in) investing activities	(10,990)	(851)
Financing activities:
Net borrowings (repayments) under working capital facilities	4,123	(800)
Net cash provided by (used in) financing activities	4,123	(800)
Exchange rate impact on cash and cash equivalents	268	(34)
Net increase (decrease) in cash and cash equivalents	(4,763)	999
Cash and cash equivalents, beginning of period	12,069	4,502
Cash and cash equivalents, end of period	7,306	5,501
Parent Company [Member]
Financing activities:
Borrowings under senior secured revolving credit facility	121,012	10,000
Proceeds from the exercise of options and warrants	14,637	2,441
Excess tax benefit related to share-based compensation	6,190	407
Payment of deferred financing costs	(225)	(52)
Repayment under senior secured revolving credit facility	(50,000)	(10,000)
Intercompany notes and investments and other	(91,614)
Other		$ (2,796)