Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Details) - Condensed Consolidating Balance Sheet - USD ($) $ in Thousands		Jun. 30, 2015		Dec. 31, 2014	Jun. 30, 2014		Dec. 31, 2013
Current assets:
Cash and cash equivalents		$ 105,093		$ 9,751	$ 7,891		$ 12,829
Accounts receivable, net		223,903		203,189
Prepaid expenses		13,633		13,805
Deferred tax assets		4,034		3,776
Other current assets		1,179		1,437
Total current assets		347,842		231,958
Property, equipment and leasehold improvements, net		17,485		15,726
Goodwill	[1]	496,482		495,679
Intangible assets, net		84,196		102,583
Long-term accounts receivable, less current portion		52,109		46,401
Deferred tax assets, noncurrent		50,682		29,682
Deferred financing costs, net		10,096		6,169
Other assets		2,293		1,946
Total assets		1,061,185	[2],[3]	930,144	949,692	[2],[3]
Current liabilities:
Accounts payable		57,257		57,033
Accrued expenses		51,881		53,978
Accrued interest expense		5,860		10,667
Deferred revenue		4,908		6,402
Deferred tax liability, noncurrent		9,554
Current portion of contingent earnout obligation		4,567		4,473
Current portion of working capital facilities				40,396
Other current liabilities		9,250		6,950
Total current liabilities		133,723		179,899
Senior unsecured notes payable		500,000		250,000
Senior secured revolving credit facility		41,730		143,853
Long-term contingent earnout obligation, less current portion				2,114
Other long-term liabilities		12,505		9,403
Total liabilities		$ 697,512		$ 585,269
Commitments and contingencies
Stockholders’ equity (deficit)		$ 363,673		$ 344,875
Total liabilities and stockholders' equity (deficit)		1,061,185		930,144
Consolidation, Eliminations [Member]
Current assets:
Intercompany receivable		(55,160)		(52,669)
Deferred tax assets				(4)
Total current assets		(55,160)		(52,673)
Investment in subsidiaries		(946,936)		(808,779)
Intercompany notes receivable		(348,652)		(348,928)
Total assets		(1,350,748)		(1,210,380)
Current liabilities:
Intercompany payable		(55,160)		(52,669)
Deferred tax liability, noncurrent				(4)
Total current liabilities		(55,160)		(52,673)
Intercompany notes payable		(348,652)		(348,928)
Total liabilities		(403,812)		$ (401,601)
Commitments and contingencies
Stockholders’ equity (deficit)		(946,936)		$ (808,779)
Total liabilities and stockholders' equity (deficit)		(1,350,748)		(1,210,380)
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents		90,778		388	999		760
Accounts receivable, net		63,157		55,684
Intercompany receivable		49,300		42,002
Prepaid expenses		8,898		8,248
Deferred tax assets		3,938		3,780
Other current assets				272
Total current assets		216,071		110,374
Property, equipment and leasehold improvements, net		11,961		10,394
Investment in subsidiaries		218,225		217,344
Intercompany notes receivable		174,326		174,464
Goodwill		392,231		387,104
Intangible assets, net		56,838		64,530
Deferred tax assets, noncurrent		43,920		22,505
Deferred financing costs, net		9,962		6,140
Other assets		680		663
Total assets		1,124,214		993,518
Current liabilities:
Accounts payable		19,285		20,163
Intercompany payable		5,860		10,667
Accrued expenses		17,858		23,904
Deferred revenue		164		244
Deferred tax liability, noncurrent		9,554
Other current liabilities		4,757		2,363
Total current liabilities		47,924		57,341
Intercompany notes payable		174,326		174,464
Other long-term liabilities		3,417		1,795
Total liabilities		235,221		$ 233,600
Commitments and contingencies
Stockholders’ equity (deficit)		888,993		$ 759,918
Total liabilities and stockholders' equity (deficit)		1,124,214		993,518
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents		14,315		9,363	$ 6,892		$ 12,069
Accounts receivable, net		160,746		147,505
Prepaid expenses		4,735		5,557
Deferred tax assets		96
Other current assets		1,179		1,165
Total current assets		181,071		163,590
Property, equipment and leasehold improvements, net		5,524		5,332
Goodwill		104,251		108,575
Intangible assets, net		27,358		38,053
Long-term accounts receivable, less current portion		52,109		46,401
Deferred tax assets, noncurrent		6,762		7,177
Deferred financing costs, net		134		29
Other assets		1,613		1,283
Total assets		378,822		370,440
Current liabilities:
Accounts payable		37,972		36,870
Intercompany payable		49,300		42,002
Accrued expenses		34,023		30,074
Deferred revenue		4,744		6,158
Deferred tax liability, noncurrent				4
Current portion of contingent earnout obligation		4,567		4,473
Current portion of working capital facilities				40,396
Other current liabilities		4,493		4,587
Total current liabilities		135,099		164,564
Senior secured revolving credit facility		41,730
Intercompany notes payable		174,326		174,464
Long-term contingent earnout obligation, less current portion				2,114
Other long-term liabilities		9,088		7,608
Total liabilities		360,243		$ 348,750
Commitments and contingencies
Stockholders’ equity (deficit)		18,579		$ 21,690
Total liabilities and stockholders' equity (deficit)		378,822		370,440
Parent Company [Member]
Current assets:
Intercompany receivable		5,860		10,667
Total current assets		5,860		10,667
Investment in subsidiaries		728,711		591,435
Intercompany notes receivable		174,326		174,464
Total assets		908,897		776,566
Current liabilities:
Accrued interest expense		5,860		10,667
Total current liabilities		5,860		10,667
Senior unsecured notes payable		500,000		250,000
Senior secured revolving credit facility				143,853
Total liabilities		505,860		$ 404,520
Commitments and contingencies
Stockholders’ equity (deficit)		403,037		$ 372,046
Total liabilities and stockholders' equity (deficit)		$ 908,897		$ 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] For segment purposes, the Company defines "segment profit" as earnings before interest expenses, income taxes, depreciation and amortization, share-based compensation expenses, acquisition related transaction costs and other expenses. A consolidated reconciliation from segment profit to income from operations is included below.

[3] 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. income tax returns has been reflected in the United States segment.