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Debt - Key Bank Loan (Narrative) (Details) - USD ($)		12 Months Ended
	Oct. 27, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt
Long-term Debt		$ 25,198,000	$ 0
Repayments of Long-term Debt		$ 38,725,000	3,375,000	$ 10,125,000
Term loans payable | KeyBank National Association
Debt
Long-term Debt			$ 38,250,000
Debt Instrument, Interest Rate, Effective Percentage			6.30%
Repayments of Long-term Debt	$ 38,250,000
Revolving loans | KeyBank National Association
Debt
Long-term Debt			$ 12,008,000
Debt Instrument, Interest Rate, Effective Percentage			6.04%
Repayments of Long-term Debt	$ 12,008,000

X

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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-Section 50
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

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.

+ References

No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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-Publisher FASB
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