Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Stock Awards Excluded from the Computation of the Effect of Dilutive Securities (Details)

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Note 3 - Stock Awards Excluded from the Computation of the Effect of Dilutive Securities (Details) - shares
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Employee Stock Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 25
Stock Appreciation Rights (SARs) [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 1,027 1,066
Restricted Stock Units (RSUs) [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 1,317 1,632
Performance Shares [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 188
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 2,344 2,911