Note 14 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Details) - Condensed Consolidating Balance Sheet (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013	Mar. 31, 2013		Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 8,504		$ 12,829	$ 7,709		$ 8,627
Accounts receivable, net	187,045		169,905
Prepaid expenses	8,196		5,785
Deferred tax assets	1,817		433
Other current assets	1,248		1,298
Total current assets	206,810		190,250
Property, equipment and leasehold improvements, net	11,238		10,950
Goodwill	438,998		369,312
Intangible assets, net	125,603		94,864
Long-term accounts receivable, less current portion	41,228		35,952
Deferred tax assets, noncurrent	14,213		21,491
Deferred financing costs, net	7,850		8,193
Other assets	1,685		1,501
Total assets	847,625	[1],[2],[3]	732,513	731,610	[1],[2],[3]
Current liabilities:
Accounts payable	59,231		52,672
Accrued expenses	41,836		38,448
Accrued interest expense	4,974		10,431
Deferred revenue	6,290		5,795
Current portion of subordinated unsecured notes payable			318
Current portion of contingent earnout obligation	6,362		2,032
Other current liabilities	7,914		6,438
Total current liabilities	126,607		116,134
Senior unsecured notes payable	250,000		250,000
Senior revolving credit facility and working capital facilities	158,475		82,970
Long-term contingent earnout obligation, less current portion	4,923		2,373
Other long-term liabilities	8,743		8,165
Total liabilities	548,748		459,642
Commitments and contingencies
Stockholders’ equity (deficit)	298,877		272,871
Total liabilities and stockholders' equity (deficit)	847,625		732,513
Consolidation, Eliminations [Member]
Current assets:
Intercompany receivable	(28,521)		(29,551)
Deferred tax assets	(4)		(4)
Total current assets	(28,525)		(29,555)
Investment in subsidiaries	(733,404)		(631,836)
Intercompany notes receivable	(349,754)		(349,652)
Deferred financing costs, net			(8,100)
Total assets	(1,111,683)		(1,019,143)
Current liabilities:
Intercompany payable	(28,521)		(29,551)
Deferred tax liability, noncurrent	(4)		(4)
Total current liabilities	(28,525)		(29,555)
Intercompany notes payable	(349,754)		(349,652)
Total liabilities	(378,279)		(379,207)
Commitments and contingencies
Stockholders’ equity (deficit)	(733,404)		(639,936)
Total liabilities and stockholders' equity (deficit)	(1,111,683)		(1,019,143)
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	1,198		760	2,208		4,125
Accounts receivable, net	55,230		46,828
Intercompany receivable	23,547		19,120
Prepaid expenses	4,272		2,889
Deferred tax assets	1,821		437
Other current assets			61
Total current assets	86,068		70,095
Property, equipment and leasehold improvements, net	6,972		6,760
Investment in subsidiaries	215,238		217,034
Intercompany notes receivable	174,877		174,826
Goodwill	319,810		259,316
Intangible assets, net	63,463		37,172
Deferred tax assets, noncurrent	7,995		15,470
Deferred financing costs, net	7,772		8,100
Other assets	533		497
Total assets	882,728		789,270
Current liabilities:
Accounts payable	20,245		17,524
Intercompany payable	4,974		10,431
Accrued expenses	14,507		10,839
Deferred revenue	4		100
Current portion of subordinated unsecured notes payable			318
Other current liabilities	2,779		2,116
Total current liabilities	42,509		41,328
Intercompany notes payable	174,877		174,826
Other long-term liabilities	1,717		1,791
Total liabilities	219,103		217,945
Commitments and contingencies
Stockholders’ equity (deficit)	663,625		571,325
Total liabilities and stockholders' equity (deficit)	882,728		789,270
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	7,306		12,069	5,501		4,502
Accounts receivable, net	131,815		123,077
Prepaid expenses	3,924		2,896
Other current assets	1,248		1,237
Total current assets	144,293		139,279
Property, equipment and leasehold improvements, net	4,266		4,190
Goodwill	119,188		109,996
Intangible assets, net	62,140		57,692
Long-term accounts receivable, less current portion	41,228		35,952
Deferred tax assets, noncurrent	6,218		6,021
Deferred financing costs, net	78		93
Other assets	1,152		1,004
Total assets	378,563		354,227
Current liabilities:
Accounts payable	38,986		35,148
Intercompany payable	23,547		19,120
Accrued expenses	27,329		27,609
Deferred revenue	6,286		5,695
Deferred tax liability, noncurrent	4		4
Current portion of contingent earnout obligation	6,362		2,032
Other current liabilities	5,135		4,322
Total current liabilities	107,649		93,930
Senior revolving credit facility and working capital facilities	42,436		37,943
Intercompany notes payable	174,877		174,826
Long-term contingent earnout obligation, less current portion	4,923		2,373
Other long-term liabilities	7,026		6,374
Total liabilities	336,911		315,446
Commitments and contingencies
Stockholders’ equity (deficit)	41,652		38,781
Total liabilities and stockholders' equity (deficit)	378,563		354,227
Parent Company [Member]
Current assets:
Intercompany receivable	4,974		10,431
Total current assets	4,974		10,431
Investment in subsidiaries	518,166		414,802
Intercompany notes receivable	174,877		174,826
Deferred financing costs, net			8,100
Total assets	698,017		608,159
Current liabilities:
Accrued interest expense	4,974		10,431
Total current liabilities	4,974		10,431
Senior unsecured notes payable	250,000		250,000
Senior revolving credit facility and working capital facilities	116,039		45,027
Total liabilities	371,013		305,458
Commitments and contingencies
Stockholders’ equity (deficit)	327,004		302,701
Total liabilities and stockholders' equity (deficit)	$ 698,017		$ 608,159

[1] For segment purposes, the Company defines segment profit as earnings before interest expenses, income taxes, depreciation and amortization, sharebasedcompensation expenses, acquisition related transaction costs and other expenses. A consolidated reconciliation from segment profit to income fromoperations is included below.

[2] Long-lived assets are noncurrent assets excluding deferred tax assets and deferred financing costs.

[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. incometax returns has been reflected in the United States segment.