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The total cost of treasury stock, divided by the number of treasury stock held.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Percentage of vesting of share-based compensation awards.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Aggregate value of stock related to Restricted Stock Awards issued during the period.

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Amount remaining of a stock repurchase plan authorized.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the par value method.

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Note 7 - Stockholders' Equity (Details) - USD ($)				12 Months Ended
Note 7 - Stockholders' Equity (Details) - USD ($)	Jun. 01, 2016	Jun. 01, 2015	Jun. 01, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 7 - Stockholders' Equity (Details) [Line Items]
Treasury Stock, Shares, Acquired				800,000
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)				$ 26.58
Treasury Stock, Value, Acquired, Par Value Method (in Dollars)				$ 21,300,000
Treasury Stock, Shares				1,705,000	905,000
Treasury Stock, Average Value, Per Share (in Dollars per share)				$ 17.45
Stock Repurchase Program, Remaining Authorized Repurchase Amount (in Dollars)				$ 43,900,000
Certain Officers and Employees [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross				91,000	98,000
Stock Issued During Period, Value, Restricted Stock Award, Gross (in Dollars)					$ 3,000,000
Director [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross				16,000	16,000	20,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value (in Dollars)				$ 555,000
Stock Issued During Period, Value, Restricted Stock Award, Gross (in Dollars)					$ 555,000	$ 485,000
2014 Incentive Compensation Plan [Member] \| Certain Officers and Employees [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross				122,000
Warrant [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Gross				20,000	204,000	60,000
Employee Stock Option [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Gross				1,200,000	2,800,000	2,200,000
Restricted Stock [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Gross						37,000
Restricted Stock [Member] \| Certain Officers and Employees [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Gross					83,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross						231,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value (in Dollars)				$ 3,700,000		$ 3,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			50.00%
Restricted Stock [Member] \| Consultant [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Gross						2,000
Restricted Stock [Member] \| Certain Employees [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Gross				297,000	238,000
Restricted Stock [Member] \| 2014 Incentive Compensation Plan [Member] \| Certain Officers and Employees [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		50.00%
Restricted Stock [Member] \| Scenario, Forecast [Member] \| 2014 Incentive Compensation Plan [Member] \| Certain Officers and Employees [Member]
Note 7 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%