Represents the amount of the Tax Exempt Industrial Revenue Bonds issued to the Bank.

No definition available.

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- Definition

Area of a real estate property.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- 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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-Name Accounting Standards Codification
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4297-108586

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- Definition

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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- 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.

+ References

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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- Details

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Long-Term Debt (Details)			6 Months Ended	12 Months Ended
Long-Term Debt (Details)	Apr. 01, 2021 USD ($)	Apr. 29, 2016 USD ($) ft²	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Apr. 01, 2016 USD ($)
Tax Exempt Industrial Revenue Bonds Amount Sold to Bank						$ 3,415,000
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			1.80%
Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 2,050,000	$ 2,050,000
Long-term Line of Credit, Total			$ 0	$ 0	$ 0
Line of Credit [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate				1.80%
Loan [Member]
Debt Instrument, Periodic Payment, Total		$ 18,000
Debt Instrument, Interest Rate, Stated Percentage		2.60%
Debt Issuance Costs, Gross		$ 139,000
Debt Instrument, Interest Rate, Effective Percentage			3.23%	3.23%
Repayments of Debt	$ 2,700,000
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total	6,100
Write off of Deferred Debt Issuance Cost	$ 82,000
Loan [Member] \| Building [Member]
Area of Real Estate Property (Square Foot) \| ft²		27,300
Duluth Economic Development Authority [Member]
Tax Exempt Industrial Revenue Bonds Amount Sold to Bank						$ 3,415,000