Refers to the annual percent of decline in premium prepayments.

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Annual percentage of premium prepayment.

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Represents the amount of monthly installments under a debt agreement.

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Represents the amount of monthly installments under a debt agreement until maturity.

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Refers to offering costs related notes.

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Number of installments.

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

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No definition available.

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Face (par) amount of debt instrument at time of issuance.

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

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

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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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Amount, after accumulated amortization, of debt discount (premium).

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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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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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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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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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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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Amount of income (expense) related to nonoperating activities, classified as other.

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Note 4 - Debt (Details) - USD ($) $ in Thousands					3 Months Ended
Note 4 - Debt (Details) - USD ($) $ in Thousands	Oct. 29, 2021	Jul. 13, 2021	Apr. 20, 2020	Apr. 16, 2020	Mar. 31, 2022	Mar. 31, 2021	Jul. 13, 2022	Jan. 11, 2022	Aug. 24, 2021	Aug. 16, 2021	Jul. 23, 2021
Debt
Number Of Monthly Installments					48 months
Other income					$ 366	$ 2,935
Senior Notes.
Debt
Aggregate principal amount					$ 34,500		$ 34,500
Amount of note offering costs		$ 2,400
Effective interest rate					10.45%
Interest rate		9.00%
Amount of outstanding principal balance, net of unamortized discounts					$ 2,000
Redemption price percentage		100.00%
KeyBank National Association \| Revolving Credit Facility
Debt
Aggregate principal amount	$ 30,000
Line of Credit Facility, Maximum Borrowing Capacity	$ 40,000
Amount of remaining availability					39,600
Outstanding on Revolving Credit Facility					0
KeyBank National Association \| Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt
Debt Instrument, Basis Spread on Variable Rate	2.00%
KeyBank National Association \| Revolving Credit Facility \| Base Rate
Debt
Debt Instrument, Basis Spread on Variable Rate	1.50%
KeyBank National Association \| Revolving Credit Facility \| Fed Funds Effective Rate Overnight Index Swap Rate
Debt
Debt Instrument, Basis Spread on Variable Rate	0.50%
KeyBank National Association \| Letter of Credit
Debt
Aggregate principal amount	$ 3,000
KeyBank National Association \| Term Loan
Debt
Aggregate principal amount	$ 10,000
Amount of monthly installments					278
Long-term Debt, Total					2,500
KeyBank National Association \| Term Loan \| London Interbank Offered Rate (LIBOR)
Debt
Debt Instrument, Basis Spread on Variable Rate	5.15%
KeyBank National Association \| Equipment Loan
Debt
Aggregate principal amount				$ 4,700
Amount of monthly installments				$ 147
Long-term Debt, Total					$ 1,800
Number Of Monthly Installments					36 months
Annual percent of premium prepayment			3.00%
Annual premium decline in premium prepayment				1.00%
Interest rate				7.45%
J. H. Fletcher & Co \| Equipment Loan
Debt
Aggregate principal amount									$ 3,900		$ 900
Amount of monthly installments									$ 200
Long-term Debt, Total					$ 3,800
Number Of Monthly Installments					24 months
Interest rate									0.00%
Komatsu Financial Limited Partnership \| Equipment Loan
Debt
Aggregate principal amount										$ 1,000
Amount of monthly installments										36
Amount of monthly installments until maturity										$ 28
Long-term Debt, Total					$ 800
Number Of Monthly Installments					36 months
Interest rate										4.60%
Brandeis Machinery & Supply Company \| Equipment Loan
Debt
Aggregate principal amount								$ 1,400
Amount of monthly installments								24
Long-term Debt, Total								$ 900
Interest rate								4.80%