Note 14 - Stock-Based Compensation (Details) (USD $)	3 Months Ended		12 Months Ended				1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	May 31, 2012 Stock Options And Stock Appreciation Rights [Member] 2012 Stock Incentive Plan [Member]	May 31, 2012 Non Employee Director [Member] 2012 Stock Incentive Plan [Member]	Dec. 31, 2004 2004 Stock Incentive Plan [Member]	May 31, 2012 2012 Stock Incentive Plan [Member]	Dec. 31, 2013 2012 Stock Incentive Plan [Member]
Note 14 - Stock-Based Compensation (Details) [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)	$ 10,258,000		$ 10,258,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 146 days
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Annual Forfeiture Rate	7.50%	7.20%
Increase (Decrease) In Stock Based Compensation Expense Due To Forfeitures	1.10%	0.80%
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Dividends Growth Rate			20.00%
Share-based Compensation Arrangement By Share-based Payment Award Fair Value Assumptions Weighted Average Expected Dividend Rate			0.00%
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance (in Shares)								3,750,000
Share Based Compensation Arrangement By Share Based Payment Award Options Vesting Percentage Year Two								25.00%
Share Based Compensation Arrangement By Share Based Payment Award Options Vesting Percentage Year Three								25.00%
Share Based Compensation Arrangement By Share Based Payment Award Options Vesting Percentage Year Four								50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								1 year
Share Based Compensation Arrangement By Share Based Payment Award Awards Exercise Period								10 years	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)									4,000,000
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Year Two						25.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Year Three						25.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Year Four						50.00%
Share Based Compensation Arrangement By Share Based Payment Award Options Vesting Period							1 year
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in Shares)										400,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	2,609,900		2,609,900
Development Stage Entities, Equity Issuance, Per Share Amount (in Dollars per share)			$ 27.21	$ 19.28
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number (in Shares)	811,269		811,269	61,726
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)			$ 140,000
Share Price (in Dollars per share)	$ 23.57		$ 23.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in Shares)			39	0	0