Note 2 - Summary of Significant Accounting Policies (Details) - USD ($)		1 Months Ended				3 Months Ended	12 Months Ended
	Apr. 16, 2015	May. 31, 2015	Apr. 30, 2015	Mar. 31, 2015	Feb. 28, 2014	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Cash Equivalents, at Carrying Value							$ 0	$ 0
Allowance for Doubtful Accounts Receivable							12,200,000	9,900,000
Cash and Cash Equivalents, at Carrying Value							47,865,000	9,751,000	$ 12,829,000	$ 8,627,000
Cash, FDIC Insured Amount							250,000
Impairment of Long-Lived Assets Held-for-use							0	0
Goodwill, Impairment Loss							0
Debt Issuance Cost			$ 14,600,000
Write off of Deferred Debt Issuance Cost			3,700,000
Gains (Losses) on Extinguishment of Debt			$ 18,300,000				(18,619,000)
Payments of Debt Extinguishment Costs							14,618,000
Amortization of Financing Costs							1,793,000	2,317,000	2,191,000
Deferred Rent Credit							3,200,000	2,600,000
Marketing and Advertising Expense							$ 3,400,000	$ 3,400,000	$ 2,900,000
Facility Lease Terms Maximum Period							10 years
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)							57,000	69,000	8,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares)							3,328,227,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price (in Dollars per share)							$ 10.89
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability							$ (6,600,000)
Selling, General and Administrative Expenses [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Allocated Share-based Compensation Expense								$ 3,300,000	$ 1,100,000
2014 Acquisitions [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Business Combination Contingent Consideration Settled In Cash							5,100,000
2014 Acquisitions [Member] | Selling, General and Administrative Expenses [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Increase Decrease In Interest And Other Expense Related To Contingent Consideration							1,500,000
2014 Acquisitions [Member] | Interest and Other Expenses [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Increase Decrease In Interest And Other Expense Related To Contingent Consideration							$ 162,000
Employee Stock Option [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures (in Shares)							35,000	630,000	621,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)							$ 19.36	$ 15.98	$ 8.55
Stock Granted, Value, Share-based Compensation, Gross									$ 5,300,000
Allocated Share-based Compensation Expense							$ 5,100,000	$ 8,200,000	$ 12,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value (in Dollars per share)							$ 678,000	$ 10,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							3 years	3 years	3 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized							$ 4,800,000	$ 8,900,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition							1 year 109 days	1 year 255 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value							$ 31,100,000	$ 54,300,000	$ 26,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares)								3,700,000	4,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price (in Dollars per share)								$ 9.95	$ 11.29
Employee Stock Option [Member] | Cost of Sales [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Allocated Share-based Compensation Expense							1,200,000	$ 2,000,000	$ 2,900,000
Employee Stock Option [Member] | Selling, General and Administrative Expenses [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Allocated Share-based Compensation Expense							3,900,000	6,200,000	9,200,000
Restricted Stock and RSUs [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in Shares)				122,000	83,000
Restricted Stock and RSUs [Member] | Selling, General and Administrative Expenses [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Allocated Share-based Compensation Expense							17,200,000	8,500,000	4,000,000
Restricted Stock Units (RSUs) [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized							$ 30,900,000	$ 15,600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition							1 year 328 days	1 year 219 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value							$ 13,500,000	$ 6,600,000	1,000,000
UNITED STATES
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Cash and Cash Equivalents, at Carrying Value							33,000,000
UNITED KINGDOM
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Deferred Revenue							2,700,000	$ 4,400,000
Vests over Four Years [Member] | Employee Stock Option [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures (in Shares)								43,000
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage								14.00%
Senior Secured Revolving Credit Facility [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage											9.00%
Senior Secured Revolving Credit Facility [Member] | Revolving Credit Facility [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Deferred Finance Costs, Gross							8,500,000
Debt Issuance Cost							1,400,000	$ 263,000	$ 56,000
Write off of Deferred Debt Issuance Cost						$ 274,000
Debt Instrument, Term	5 years	5 years
Senior Notes 2023 [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Senior Notes											$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.625%
Debt Instrument, Face Amount	$ 500,000,000
Debt Instrument, Issuance Percentage	100.00%
Proceeds from Issuance of Long-term Debt	$ 500,000,000
Payments of Debt Extinguishment Costs							7,500,000
Senior Unsecured Notes [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Deferred Finance Costs, Gross							$ 7,100,000
Debt Instrument, Term		8 years
Minimum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)							$ 19.30	$ 14.71	$ 6.63
Minimum [Member] | Time Lapse Restricted Stock and RSUs [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							1 year
Maximum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)							$ 19.37	$ 17.26	$ 12.61
Maximum [Member] | Time Lapse Restricted Stock and RSUs [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							5 years