Basis Spread of Variable Rate, LIBOR, Minimum

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- Definition

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

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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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- Definition

Amount of interest capitalized during the period.

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- Definition

Total interest costs incurred during the period and either capitalized or charged against earnings.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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No definition available.

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- Definition

Fair value of the amount outstanding under the credit facility.

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- Definition

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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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt (Details) - USD ($)	12 Months Ended
Debt (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt
Basis Spread of Variable Rate, LIBOR, Minimum	50.00%
Amount of interest costs incurred, capitalized, and expensed
Interest costs incurred	$ 1,424,000	$ 2,796,000	$ 2,172,000
Less: Interest capitalized	(574,000)	(512,000)	(144,000)
Interest expense	$ 850,000	$ 2,284,000	$ 2,028,000
LIBOR \| Minimum
Debt
Credit facility, interest rate spread (as a percent)	65.00%
LIBOR \| Maximum
Debt
Credit facility, interest rate spread (as a percent)	150.00%
Base rate \| Minimum
Debt
Credit facility, interest rate spread (as a percent)	0.00%
Base rate \| Maximum
Debt
Credit facility, interest rate spread (as a percent)	50.00%
Primary Revolving Credit Facility
Debt
Long-term Debt	$ 900,000
Line of Credit Facility, Fair Value of Amount Outstanding	304,400,000
Primary Revolving Credit Facility \| Wells Fargo Bank
Debt
Line of Credit Facility, Maximum Borrowing Capacity	$ 300,000,000
Primary Revolving Credit Facility \| Minimum \| Wells Fargo Bank
Debt
Facility fees on the available commitment of the facility (as a percent)	10.00%
Primary Revolving Credit Facility \| Maximum \| Wells Fargo Bank
Debt
Facility fees on the available commitment of the facility (as a percent)	25.00%