Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Details) - Condensed Consolidating Balance Sheet (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014		Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 20,282		$ 9,751		$ 8,504		$ 12,829
Accounts receivable, net	205,759		203,189
Prepaid expenses	12,588		13,805
Deferred tax assets	4,039		3,776
Other current assets	2,071		1,437
Total current assets	244,739		231,958
Property, equipment and leasehold improvements, net	16,055		15,726
Goodwill	490,007	[1]	495,679	[1]
Intangible assets, net	91,628		102,583
Long-term accounts receivable, less current portion	47,743		46,401
Deferred tax assets, noncurrent	45,737		29,682
Deferred financing costs, net	5,704		6,169
Other assets	2,149		1,946
Total assets	943,762	[2]	930,144		847,625	[2]
Current liabilities:
Accounts payable	57,437		57,033
Accrued expenses	52,445		53,978
Accrued interest expense	5,027		10,667
Deferred revenue	5,426		6,402
Deferred tax liability, noncurrent	10,580
Current portion of contingent earnout obligation	4,393		4,473
Current portion of working capital facilities			40,396
Other current liabilities	7,235		6,950
Total current liabilities	131,963		179,899
Senior unsecured notes payable	250,000		250,000
Senior secured revolving credit facility	178,447		143,853
Long-term contingent earnout obligation, less current portion			2,114
Other long-term liabilities	11,619		9,403
Total liabilities	582,609		585,269
Commitments and contingencies
Stockholders’ equity (deficit)	361,153		344,875
Total liabilities and stockholders' equity (deficit)	943,762		930,144
Consolidation, Eliminations [Member]
Current assets:
Intercompany receivable	(50,025)		(52,669)
Deferred tax assets			(4)
Total current assets	(50,025)		(52,673)
Investment in subsidiaries	(812,839)		(808,779)
Intercompany notes receivable	(348,770)		(348,928)
Total assets	(1,211,634)		(1,210,380)
Current liabilities:
Intercompany payable	(50,025)		(52,669)
Deferred tax liability, noncurrent			(4)
Total current liabilities	(50,025)		(52,673)
Intercompany notes payable	(348,770)		(348,928)
Total liabilities	(398,795)		(401,601)
Commitments and contingencies
Stockholders’ equity (deficit)	(812,839)		(808,779)
Total liabilities and stockholders' equity (deficit)	(1,211,634)		(1,210,380)
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	9,202		388		1,198		760
Accounts receivable, net	57,518		55,684
Intercompany receivable	44,998		42,002
Prepaid expenses	7,991		8,248
Deferred tax assets	3,938		3,780
Other current assets	958		272
Total current assets	124,605		110,374
Property, equipment and leasehold improvements, net	11,118		10,394
Investment in subsidiaries	218,225		217,344
Intercompany notes receivable	174,385		174,464
Goodwill	388,379		387,104
Intangible assets, net	60,527		64,530
Deferred tax assets, noncurrent	38,661		22,505
Deferred financing costs, net	5,690		6,140
Other assets	695		663
Total assets	1,022,285		993,518
Current liabilities:
Accounts payable	21,126		20,163
Intercompany payable	5,027		10,667
Accrued expenses	23,343		23,904
Deferred revenue	300		244
Deferred tax liability, noncurrent	10,580
Other current liabilities	2,634		2,363
Total current liabilities	52,430		57,341
Intercompany notes payable	174,385		174,464
Other long-term liabilities	3,364		1,795
Total liabilities	240,759		233,600
Commitments and contingencies
Stockholders’ equity (deficit)	781,526		759,918
Total liabilities and stockholders' equity (deficit)	1,022,285		993,518
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	11,080		9,363		7,306		12,069
Accounts receivable, net	148,241		147,505
Prepaid expenses	4,597		5,557
Deferred tax assets	101
Other current assets	1,113		1,165
Total current assets	165,132		163,590
Property, equipment and leasehold improvements, net	4,937		5,332
Goodwill	101,628		108,575
Intangible assets, net	31,101		38,053
Long-term accounts receivable, less current portion	47,743		46,401
Deferred tax assets, noncurrent	7,076		7,177
Deferred financing costs, net	14		29
Other assets	1,454		1,283
Total assets	359,085		370,440
Current liabilities:
Accounts payable	36,311		36,870
Intercompany payable	44,998		42,002
Accrued expenses	29,102		30,074
Deferred revenue	5,126		6,158
Deferred tax liability, noncurrent			4
Current portion of contingent earnout obligation	4,393		4,473
Current portion of working capital facilities			40,396
Other current liabilities	4,601		4,587
Total current liabilities	124,531		164,564
Senior secured revolving credit facility	38,447
Intercompany notes payable	174,385		174,464
Long-term contingent earnout obligation, less current portion			2,114
Other long-term liabilities	8,255		7,608
Total liabilities	345,618		348,750
Commitments and contingencies
Stockholders’ equity (deficit)	13,467		21,690
Total liabilities and stockholders' equity (deficit)	359,085		370,440
Parent Company [Member]
Current assets:
Intercompany receivable	5,027		10,667
Total current assets	5,027		10,667
Investment in subsidiaries	594,614		591,435
Intercompany notes receivable	174,385		174,464
Total assets	774,026		776,566
Current liabilities:
Accrued interest expense	5,027		10,667
Total current liabilities	5,027		10,667
Senior unsecured notes payable	250,000		250,000
Senior secured revolving credit facility	140,000		143,853
Total liabilities	395,027		404,520
Commitments and contingencies
Stockholders’ equity (deficit)	378,999		372,046
Total liabilities and stockholders' equity (deficit)	$ 774,026		$ 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. income tax returns has been reflected in the United States segment.