Note 14 - Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands		Mar. 31, 2016		Dec. 31, 2015	Mar. 31, 2015		Dec. 31, 2014
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents		$ 1,554		$ 33,011	$ 9,204		$ 388
Accounts receivable, net		77,277		68,896
Intercompany receivable		61,586		57,394
Prepaid expenses		$ 8,083		10,398
Other current assets				848
Total current assets		$ 148,500		170,547
Property, equipment and leasehold improvements, net		13,877		12,695
Investment in subsidiaries		282,062		280,114
Intercompany notes receivable		174,413		174,421
Goodwill		469,161		398,045
Intangible assets, net		$ 76,555		$ 46,423
Long-term accounts receivable, less current portion
Deferred tax assets, noncurrent		$ 37,467		$ 47,363
Deferred financing costs, net		2,296		2,416
Other assets		885		725
Total assets		1,205,216		1,132,749
Current liabilities:
Accounts payable		29,192		24,072
Intercompany payable		13,414		6,245
Accrued expenses		$ 11,967		$ 13,150
Accrued interest expense
Deferred revenue		$ 222		$ 138
Other current liabilities		4,432		3,383
Total current liabilities		$ 61,783		$ 46,988
Senior unsecured notes payable
Senior secured revolving credit facility and working capital facilities, less current portion
Intercompany notes payable		$ 174,413		$ 174,421
Deferred tax liability, noncurrent
Other long-term liabilities		$ 3,232		$ 2,950
Total liabilities		$ 244,507		224,359
Commitments and contingencies
Stockholders’ equity (deficit)		$ 960,709		908,390
Total liabilities and stockholders' equity (deficit)		1,205,216		1,132,749
Current portion of contingent earnout obligation		2,556
Long-term contingent earnout obligation, less current portion		5,079
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents		14,445		14,854	$ 11,078		$ 9,363
Accounts receivable, net		$ 171,785		$ 176,553
Intercompany receivable
Prepaid expenses		$ 11,831		$ 6,411
Other current assets		1,078		1,110
Total current assets		199,139		198,928
Property, equipment and leasehold improvements, net		$ 8,387		$ 7,450
Investment in subsidiaries
Intercompany notes receivable
Goodwill		$ 112,218		$ 110,252
Intangible assets, net		32,854		38,250
Long-term accounts receivable, less current portion		67,495		62,717
Deferred tax assets, noncurrent		3,129		3,042
Deferred financing costs, net		90		104
Other assets		3,293		3,244
Total assets		426,605		423,987
Current liabilities:
Accounts payable		36,756		36,527
Intercompany payable		61,586		57,394
Accrued expenses		$ 43,294		$ 47,598
Accrued interest expense
Deferred revenue		$ 3,276		$ 3,546
Other current liabilities		2,850		5,673
Total current liabilities		$ 147,762		$ 150,738
Senior unsecured notes payable
Senior secured revolving credit facility and working capital facilities, less current portion		$ 32,578		$ 35,243
Intercompany notes payable		174,413		174,421
Deferred tax liability, noncurrent		3,250		3,333
Other long-term liabilities		10,993		9,788
Total liabilities		$ 368,996		373,523
Commitments and contingencies
Stockholders’ equity (deficit)		$ 57,609		50,464
Total liabilities and stockholders' equity (deficit)		$ 426,605		$ 423,987
Current portion of contingent earnout obligation
Long-term contingent earnout obligation, less current portion
Parent Company [Member]
Current assets:
Cash and cash equivalents
Accounts receivable, net
Intercompany receivable		$ 13,414		$ 6,245
Prepaid expenses
Other current assets
Total current assets		$ 13,414		$ 6,245
Property, equipment and leasehold improvements, net
Investment in subsidiaries		$ 895,039		$ 800,743
Intercompany notes receivable		$ 174,413		$ 174,421
Goodwill
Intangible assets, net
Long-term accounts receivable, less current portion
Deferred tax assets, noncurrent
Deferred financing costs, net
Other assets
Total assets		$ 1,082,866		$ 981,409
Current liabilities:
Accounts payable
Intercompany payable
Accrued expenses
Accrued interest expense		$ 13,414		$ 6,245
Deferred revenue
Other current liabilities
Total current liabilities		$ 13,414		$ 6,245
Senior unsecured notes payable		493,359		$ 493,126
Senior secured revolving credit facility and working capital facilities, less current portion		$ 50,000
Intercompany notes payable
Deferred tax liability, noncurrent
Other long-term liabilities
Total liabilities		$ 556,773		$ 499,371
Commitments and contingencies
Stockholders’ equity (deficit)		$ 526,093		482,038
Total liabilities and stockholders' equity (deficit)		$ 1,082,866		$ 981,409
Current portion of contingent earnout obligation
Long-term contingent earnout obligation, less current portion
Consolidation, Eliminations [Member]
Current assets:
Cash and cash equivalents
Accounts receivable, net
Intercompany receivable		$ (75,000)		$ (63,639)
Prepaid expenses
Other current assets
Total current assets		$ (75,000)		$ (63,639)
Property, equipment and leasehold improvements, net
Investment in subsidiaries		$ (1,177,101)		$ (1,080,857)
Intercompany notes receivable		$ (348,826)		$ (348,842)
Goodwill
Intangible assets, net
Long-term accounts receivable, less current portion
Deferred tax assets, noncurrent
Deferred financing costs, net
Other assets
Total assets		$ (1,600,927)		$ (1,493,338)
Current liabilities:
Accounts payable
Intercompany payable		$ (75,000)		$ (63,639)
Accrued expenses
Accrued interest expense
Deferred revenue
Other current liabilities
Total current liabilities		$ (75,000)		$ (63,639)
Senior unsecured notes payable
Senior secured revolving credit facility and working capital facilities, less current portion
Intercompany notes payable		$ (348,826)		$ (348,842)
Deferred tax liability, noncurrent
Other long-term liabilities
Total liabilities		$ (423,826)		$ (412,481)
Commitments and contingencies
Stockholders’ equity (deficit)		$ (1,177,101)		(1,080,857)
Total liabilities and stockholders' equity (deficit)		$ (1,600,927)		(1,493,338)
Current portion of contingent earnout obligation
Long-term contingent earnout obligation, less current portion
Cash and cash equivalents		$ 15,999		47,865	$ 20,282		$ 9,751
Accounts receivable, net		$ 249,062		$ 245,449
Intercompany receivable
Prepaid expenses		$ 19,914		$ 16,809
Other current assets		1,078		1,958
Total current assets		286,053		312,081
Property, equipment and leasehold improvements, net		$ 22,264		$ 20,145
Investment in subsidiaries
Intercompany notes receivable
Goodwill	[1]	$ 581,379		$ 508,297
Intangible assets, net		109,409		84,673
Long-term accounts receivable, less current portion		67,495		62,717
Deferred tax assets, noncurrent		40,596		50,405
Deferred financing costs, net		2,386		2,520
Other assets		4,178		3,969
Total assets		1,113,760	[2],[3]	1,044,807	$ 939,922	[2],[3]
Accounts payable		$ 65,948		$ 60,599
Intercompany payable
Accrued expenses		$ 55,261		$ 60,748
Accrued interest expense		13,414		6,245
Deferred revenue		3,498		3,684
Other current liabilities		7,282		9,056
Total current liabilities		147,959		140,332
Senior unsecured notes payable		493,359		493,126
Senior secured revolving credit facility and working capital facilities, less current portion		$ 82,578		$ 35,243
Intercompany notes payable
Deferred tax liability, noncurrent		$ 3,250		$ 3,333
Other long-term liabilities		14,225		12,738
Total liabilities		$ 746,450		$ 684,772
Commitments and contingencies
Stockholders’ equity (deficit)		$ 367,310		$ 360,035
Total liabilities and stockholders' equity (deficit)		1,113,760		$ 1,044,807
Current portion of contingent earnout obligation		2,556
Long-term contingent earnout obligation, less current portion		$ 5,079

[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.