Note Q - Long-term Debt (Details Textual) - USD ($)	Nov. 01, 2017	Jun. 01, 2020
Dividends Payable, Amount Per Share (in dollars per share)	$ 5.00
Senior Notes [Member]
Debt Instrument, Fixed Charge Coverage Ratio	2.0
Debt Instrument, Priority Secured Leverage Ratio	0.40
Debt Instrument Secured Leverage Ratio	3.75
Debt Instrument, Event of Default, Percentage Ownership Enabling the Declaration of Due and Payable	25.00%
Senior Notes [Member] \| In The Event of Certain Equity Offerings [Member]
Debt Instrument, Redemption Price, Percentage	106.625%
Senior Notes [Member] \| In the Event of Chang of Control Offer [Member]
Debt Instrument, Redemption Price, Percentage	101.00%
Senior Notes [Member] \| In the Event the Company Sells Certain Assets and Fails to Use the Proceeds as Required [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes [Member] \| Senior Secured 2025 Notes [Member]
Proceeds from Issuance of Long-term Debt, Total	$ 150,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.625%
Debt Instrument, Repurchased Face Amount		$ 10,000,000
Senior Notes [Member] \| Senior Secured 2020 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	10.00%
Debt Instrument, Face Amount	$ 135,000,000
Senior Notes [Member] \| Option to Redeem Notes at Redemption Price Equal to the Percentage of Principal Amount plus the Applicable Premium [Member]
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes [Member] \| Option to Redeem Notes at Redemption Price Equal to the Percentage of Principal Amount plus the Applicable Premium [Member] \| Applicable Premium if Percentage of Principal Amount is Greater than Treasury Rate Basis Spread [Member]
Debt Instrument, Applicable Premium, Percentage of Principal Amount	1.00%
Senior Notes [Member] \| Option to Redeem Notes at Redemption Price Equal to the Percentage of Principal Amount plus the Applicable Premium [Member] \| Applicable Premium if Treasury Rate Basis Spread is Greater than Percentage of Principal Amount [Member] \| Treasury Rate [Member]
Debt Instrument, Applicable Premium, Treasury Rate Basis Spread	0.50%
Senior Notes [Member] \| Option to Redeem at Redemption Price Equal to Percentage of Principal Amount [Member] \| In The Event of Certain Equity Offerings [Member] \| Maximum [Member]
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	35.00%

Applicable premium if using the percentage of principal amount.

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Applicable premium if treasury rate basis spread is used.

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Represents the percentage ownership of the debt instrument that enables the holders to declare the debt instrument due and payable by providing notice to the Company, in the event of default.

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Ration of consolidated cash flows to the fixed charges for the relevant period.

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The ratio of consolidated net debt outstanding secured by a priority lien to consolidated cash flow.

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Ratio of consolidated Net debt outstanding that is secured by a lien on any property the company owns to consolidated cash flows.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Percentage of principal amount of debt redeemed.

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Face (par) amount of the original debt instrument that was repurchased.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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