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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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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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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Note 7 - Debt (Details) - USD ($) $ in Thousands									12 Months Ended
Note 7 - Debt (Details) - USD ($) $ in Thousands	Nov. 24, 2021	Oct. 29, 2021	Aug. 16, 2021	Jul. 23, 2021	Jul. 13, 2021	Jul. 13, 2020	Apr. 20, 2020	Apr. 16, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt
Long-term Debt, Total									$ 45,513
Other income									7,429	$ 11,926	$ 1,758
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt
Debt Instrument, Basis Spread on Variable Rate		2.00%
Fed Funds Effective Rate Overnight Index Swap Rate
Debt
Debt Instrument, Basis Spread on Variable Rate		0.50%
Revolving Credit Facility
Debt
Amount of remaining availability									39,100
Outstanding on Revolving Credit Facility									0
Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt
Debt Instrument, Basis Spread on Variable Rate		2.00%
Revolving Credit Facility \| Base Rate
Debt
Debt Instrument, Basis Spread on Variable Rate		1.50%
Term Loan
Debt
Amount of monthly installments									$ 278
Term Loan \| London Interbank Offered Rate (LIBOR)
Debt
Debt Instrument, Basis Spread on Variable Rate									5.15%
Senior Notes.
Debt
Aggregate principal amount						$ 34,500			$ 32,363
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						$ 2,100
Redemption price percentage					100.00%
Equipment Loan
Debt
Aggregate principal amount								$ 4,700
Amount of monthly installments								$ 147
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%
PPP Loan
Debt
Proceeds from loan							$ 8,400
Other income							$ 8,400
KeyBank National Association \| Revolving Credit Facility
Debt
Aggregate principal amount		$ 30,000
Line of Credit Facility, Maximum Borrowing Capacity		40,000
KeyBank National Association \| Letter of Credit
Debt
Aggregate principal amount		3,000
KeyBank National Association \| Term Loan
Debt
Aggregate principal amount		$ 10,000
J. H. Fletcher & Co
Debt
Aggregate principal amount	$ 3,900			$ 900
Amount of monthly installments	$ 200			$ 200
Number Of Monthly Installments	24 months			24 months
Interest rate	0.00%			0.00%
Komatsu Financial Limited Partnership
Debt
Aggregate principal amount			$ 1,000
Amount of monthly installments			36
Amount of monthly installments until maturity			$ 28
Number Of Monthly Installments			36 months
Interest rate			4.60%