Loan Redemption Period After Redemption Notice

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Mandatory redemption of bonds annual amount.

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Mandatory redemption of bonds annual start date.

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Maturity period of senior note.

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Property and equipment with undepreciated cost pledge as collateral for long term debt.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount of the required periodic payments applied to principal.

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End date of debt instrument redemption period, in CCYY-MM-DD format.

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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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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Fixed interest rate related to the interest rate derivative.

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No definition available.

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Nominal or face amount used to calculate payment on derivative.

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Gross amount of debt extinguished.

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No definition available.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.

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Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective.

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Long-Term Debt (Narrative) (Details) - USD ($)		1 Months Ended	3 Months Ended
Long-Term Debt (Narrative) (Details) - USD ($)	Nov. 01, 2019	Jul. 31, 2020	Dec. 26, 2020	Dec. 28, 2019	Jun. 30, 2013	Dec. 31, 2010
Debt Instrument [Line Items]
Debt extinguishment costs				$ (3,719,209)
Loan redeption period after rdemption notice	30 days
Annual amount of redemption of bonds			$ 4,500,000
Mandatory bonds redemption beginning period			Jan. 01, 2014
Mandatory bonds redemption period end date			Sep. 26, 2026
Other comprehensive income, net of income taxes			$ 2,763,738	2,848,879
Property and equipment with undepreciated cost pledge as collateral for long term debt			298,100,000
Excess net worth calculated under covenants in the Notes, the Bonds, and the Line			222,400,000
Interest Rate Swap Two [Member]
Debt Instrument [Line Items]
Derivative notional amount			$ 146,000,000.0
Derivative, fixed interest rate			2.95%
Interest Rate Swap Two [Member] \| One-Month LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate			1.50%
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative notional amount			$ 41,000,000.0
Derivative, fixed interest rate			3.92%
Other comprehensive income, net of income taxes			$ 2,100,000	$ 2,200,000
Unrealized losses on cash flow hedge			$ (10,800,000)
Interest Rate Swap [Member] \| One-Month LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate			1.65%
Senior Notes, Interest Rate of 5.75%, Maturing 2023 [Member]
Debt Instrument [Line Items]
Debt instrument principal amount					$ 700,000,000.0
Debt instrument, redemption price as percentage of principal amount				101.917%
Maturity period of senior notes			2023
Debt instrument stated interest rate					5.75%
Debt instrument outstanding balance			$ 295,000,000.0
Senior Notes, Interest Rate of 5.75%, Maturing 2023 [Member] \| Notes Redeemed on July 9, 2020 [Member]
Debt Instrument [Line Items]
Debt redemeed amount			$ 150,000,000
Debt instrument, redemption price as percentage of principal amount			100.958%
Senior Notes, Interest Rate of 5.75%, Maturing 2023 [Member] \| Notes Redeemed on August 27, 2020 [Member]
Debt Instrument [Line Items]
Debt redemeed amount		$ 100,000,000
Debt instrument, redemption price as percentage of principal amount		100.958%
Secured Debt [Member] \| Interest Rate Swap Two [Member]
Debt Instrument [Line Items]
Monthly principal amortization			$ 650,000
Secured Debt [Member] \| Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt maturity date			Oct. 01, 2027
Monthly principal amortization			$ 500,000
Facility Bonds [Member]
Debt Instrument [Line Items]
Debt maturity date			Jan. 01, 2036
Description of interest rate on bonds			The interest rate on the Bonds is equal to one-month LIBOR (adjusted monthly) plus a credit spread, adjusted to reflect the income tax exemption.
Debt instrument outstanding balance			$ 68,000,000.0			$ 99,700,000
Credit Line [Member]
Debt Instrument [Line Items]
Line of credit facility borrowing capacity			175,000,000.0
Borrowings outstanding			25,000,000.0
Credit Line [Member] \| Unused Letters Of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility borrowing capacity			20,000,000.0
Unused letters of credit issued			$ 1,100,000
Real Estate Loan (the “Loan”) [Member]
Debt Instrument [Line Items]
Debt instrument principal amount	$ 155,000,000
Debt instrument term	10 years
Debt instrument, periodic principal payment	$ 650,000
Debt maturity date			Jan. 31, 2030
Real Estate Loan (the “Loan”) [Member] \| Senior Notes, Interest Rate of 5.75%, Maturing 2023 [Member]
Debt Instrument [Line Items]
Debt extinguishment costs				$ 3,700,000