Cash outflow to pay for fixed assets.

No definition available.

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- Definition

The credit limit for external borrowing pursuant to the debt agreement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Ratio of current maturities of long term interest bearing debt, to earnings before interest, tax, depreciation, and amortization (EBITDA).

+ References

No definition available.

+ Details

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- Definition

The minimum amount of consolidated cash and available credit line that required by the debt agreement.

+ References

No definition available.

+ Details

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- Definition

The minimum fixed charge coverage ratio that required by the debt agreement.

+ References

No definition available.

+ Details

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- Definition

Amount of borrowing capacity currently available under the debt agreement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The ratio of cash available for debt servicing to interest, principal and lease payments.

+ References

No definition available.

+ Details

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- Definition

Minimum Consolidated Cash and Liquid Investments Pursuant to New Loan and Security Agreement.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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Period Type:	instant

- Definition

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

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- 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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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
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- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

+ Details

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Period Type:	instant

- 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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- Definition

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

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Note 10 - Debt (Details Textual)			1 Months Ended	3 Months Ended			6 Months Ended
Note 10 - Debt (Details Textual)	Dec. 31, 2019 USD ($)	Nov. 22, 2011 USD ($)	Jan. 31, 2018	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 30, 2019 USD ($)	Jan. 01, 2018 USD ($)
Line of Credit Facility, Maximum Borrowing Capacity	$ 25,000,000				$ 25,000,000		$ 25,000,000		$ 23,000,000	$ 23,000,000
Repayments of Long-term Debt, Total							2,813,000	$ 1,534,000
Debt Agreement Covenants, Fixed Charge Coverage Ratio, Minimum	0.0667
Debt Agreement Covenants, Consolidated Cash and Available Credit Line, Minimum	$ 7,500,000				$ 7,500,000		7,500,000
Line of Credit Facility, Interest Rate During Period					3.70%	3.90%
Long-term Line of Credit, Total	16,900,000				$ 16,900,000		$ 16,900,000
Line of Credit Facility, Commitment Fee Percentage							0.25%
Minimum Consolidated Cash and Liquid Investments Pursuant to New Loan and Security Agreement							$ 10,000,000
Maximum [Member]
Current Funded Debt to EBITDA Ratio							2.25
Annual Capital Expenditures							$ 15,000,000
Debt Service Coverage Rate							1.25
Minimum [Member]
Current Funded Debt to EBITDA Ratio							1
Debt Service Coverage Rate							1
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			1.50%
Term Loan [Member]
Debt Instrument, Face Amount	$ 10,000,000				$ 10,000,000		$ 10,000,000
Debt Instrument, Term	5 years
Debt Instrument, Interest Rate, Stated Percentage	4.00%				4.00%		4.00%
Credit Limit for External Borrowing	$ 5,000,000				$ 5,000,000		$ 5,000,000		$ 2,500,000
Debt Agreement, Remaining Borrowing Capacity	6,500,000				6,500,000		6,500,000
Bytewise Term Loan [Member]
Debt Instrument, Face Amount	15,500,000	$ 15,500,000			15,500,000		15,500,000
Debt Instrument, Term		10 years
Debt Instrument, Interest Rate, Stated Percentage		4.50%
Debt Instrument, Periodic Payment, Total		$ 160,640
Long-term Debt, Total	$ 3,500,000				$ 3,500,000		$ 3,500,000
Bytewise Term Loan [Member] \| Forecast [Member]
Repayments of Long-term Debt, Total				$ 3,500,000