Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Details) - Condensed Consolidating Balance Sheet - USD ($) $ in Thousands		Sep. 30, 2015		Dec. 31, 2014	Sep. 30, 2014		Dec. 31, 2013
Current assets:
Cash and cash equivalents		$ 127,338		$ 9,751	$ 9,111		$ 12,829
Accounts receivable, net		225,509		203,189
Prepaid expenses		14,900		13,805
Deferred tax assets		5,072		3,776
Other current assets		3,488		1,437
Total current assets		376,307		231,958
Property, equipment and leasehold improvements, net		17,078		15,726
Goodwill	[1]	489,532		495,679
Intangible assets, net		71,496		102,583
Long-term accounts receivable, less current portion		52,497		46,401
Deferred tax assets, noncurrent		49,658		29,682
Deferred financing costs, net		9,753		6,169
Other assets		2,100		1,946
Total assets		1,068,421	[2]	930,144	940,017	[2]
Current liabilities:
Accounts payable		59,240		57,033
Accrued expenses		54,274		53,978
Accrued interest expense		12,892		10,667
Deferred revenue		4,158		6,402
Deferred tax liability, noncurrent		5,587
Current portion of contingent earnout obligation				4,473
Current portion of working capital facilities				40,396
Other current liabilities		5,841		6,950
Total current liabilities		136,405		179,899
Senior unsecured notes payable		500,000		250,000
Senior secured revolving credit facility		38,838		143,853
Long-term contingent earnout obligation, less current portion				2,114
Other long-term liabilities		12,727		9,403
Total liabilities		$ 693,557		$ 585,269
Commitments and contingencies
Stockholders’ equity (deficit)		$ 374,864		$ 344,875
Total liabilities and stockholders' equity (deficit)		1,068,421		930,144
Consolidation, Eliminations [Member]
Current assets:
Cash and cash equivalents		0
Intercompany receivable		(66,485)		(52,669)
Deferred tax assets				(4)
Total current assets		(66,485)		(52,673)
Investment in subsidiaries		(954,622)		(808,779)
Intercompany notes receivable		(348,750)		(348,928)
Total assets		(1,369,857)		(1,210,380)
Current liabilities:
Intercompany payable		(66,485)		(52,669)
Deferred tax liability, noncurrent				(4)
Total current liabilities		(66,485)		(52,673)
Intercompany notes payable		(348,750)		(348,928)
Total liabilities		(415,235)		$ (401,601)
Commitments and contingencies
Stockholders’ equity (deficit)		(954,622)		$ (808,779)
Total liabilities and stockholders' equity (deficit)		(1,369,857)		(1,210,380)
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents		115,222		388	981		760
Accounts receivable, net		64,657		55,684
Intercompany receivable		53,593		42,002
Prepaid expenses		10,478		8,248
Deferred tax assets		4,976		3,780
Other current assets		2,351		272
Total current assets		251,277		110,374
Property, equipment and leasehold improvements, net		11,979		10,394
Investment in subsidiaries		222,773		217,344
Intercompany notes receivable		174,375		174,464
Goodwill		392,636		387,104
Intangible assets, net		49,778		64,530
Deferred tax assets, noncurrent		43,727		22,505
Deferred financing costs, net		9,635		6,140
Other assets		711		663
Total assets		1,156,891		993,518
Current liabilities:
Accounts payable		23,552		20,163
Intercompany payable		12,892		10,667
Accrued expenses		18,717		23,904
Deferred revenue		162		244
Deferred tax liability, noncurrent		5,587
Other current liabilities		2,173		2,363
Total current liabilities		57,496		57,341
Intercompany notes payable		174,375		174,464
Other long-term liabilities		3,701		1,795
Total liabilities		241,159		$ 233,600
Commitments and contingencies
Stockholders’ equity (deficit)		915,732		$ 759,918
Total liabilities and stockholders' equity (deficit)		1,156,891		993,518
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents		12,116		9,363	$ 8,130		$ 12,069
Accounts receivable, net		160,852		147,505
Prepaid expenses		4,422		5,557
Deferred tax assets		96
Other current assets		1,137		1,165
Total current assets		178,623		163,590
Property, equipment and leasehold improvements, net		5,099		5,332
Goodwill		96,896		108,575
Intangible assets, net		21,718		38,053
Long-term accounts receivable, less current portion		52,497		46,401
Deferred tax assets, noncurrent		5,931		7,177
Deferred financing costs, net		118		29
Other assets		1,389		1,283
Total assets		362,271		370,440
Current liabilities:
Accounts payable		35,688		36,870
Intercompany payable		53,593		42,002
Accrued expenses		35,557		30,074
Deferred revenue		3,996		6,158
Deferred tax liability, noncurrent				4
Current portion of contingent earnout obligation				4,473
Current portion of working capital facilities				40,396
Other current liabilities		3,668		4,587
Total current liabilities		132,502		164,564
Senior secured revolving credit facility		38,838
Intercompany notes payable		174,375		174,464
Long-term contingent earnout obligation, less current portion				2,114
Other long-term liabilities		9,026		7,608
Total liabilities		354,741		$ 348,750
Commitments and contingencies
Stockholders’ equity (deficit)		7,530		$ 21,690
Total liabilities and stockholders' equity (deficit)		362,271		370,440
Parent Company [Member]
Current assets:
Cash and cash equivalents		0
Intercompany receivable		12,892		10,667
Total current assets		12,892		10,667
Investment in subsidiaries		731,849		591,435
Intercompany notes receivable		174,375		174,464
Total assets		919,116		776,566
Current liabilities:
Accrued interest expense		12,892		10,667
Total current liabilities		12,892		10,667
Senior unsecured notes payable		500,000		250,000
Senior secured revolving credit facility				143,853
Total liabilities		512,892		$ 404,520
Commitments and contingencies
Stockholders’ equity (deficit)		406,224		$ 372,046
Total liabilities and stockholders' equity (deficit)		$ 919,116		$ 776,566

[1] Goodwill recorded in connection with certain tax benefits to be realized in the Company's U.S. income tax returns has been reflected in the United States segment.

[2] Total assets and long-lived assets include goodwill. Goodwill recorded in connection with certain tax benefits to be realized in the Company's U.S. incometax returns has been reflected in the United States segment.