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Note 5 - Debt - Debt (Details) - USD ($)	Mar. 29, 2020	Mar. 15, 2020	Sep. 29, 2019	Mar. 31, 2019	Mar. 31, 2014
Long-term debt, gross	$ 576,000,000	$ 431,502,000	$ 443,627,000
Unamortized debt issue costs			(11,282,000)
Less current maturities of long-term debt			2,954,000
Total long-term debt	576,000,000		429,391,000
Credit Agreement [Member]
Long-term debt, gross	576,000,000
Interest rate				9.00%
First Lien Credit Facility [Member]
Long-term debt, gross
Interest rate
Senior Secured Notes [Member]
Long-term debt, gross			363,420,000
Interest rate				9.50%	9.50%
Second Lien Term Loan [Member]
Long-term debt, gross			$ 80,207,000
Interest rate				12.00%