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

No definition available.

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

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The effective interest rate during the reporting period.

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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 classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. 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 a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

+ References

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The cash inflow provided by derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

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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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Debt (Details Textual) - USD ($)		12 Months Ended
Debt (Details Textual) - USD ($)	Nov. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Long-term debt		$ 82,870,000	$ 116,500,000
Unamortized debt issuance costs		1,200,000
Cash proceeds from termination of interest rate derivatives		0	544,000	$ 0
Payments for hedge		0	$ 0	$ 474,000
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Available borrowing capacity		$ 25,800,000
Interest rate during period (percent)		4.50%	4.00%
Credit Agreement [Member] \| Base Rate [Member] \| Minimum [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	25.00%
Credit Agreement [Member] \| Base Rate [Member] \| Maximum [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	125.00%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	1.00%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	125.00%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	225.00%
Credit Agreement [Member] \| Overnight Bank Funding Rate [Member]
Short-term Debt [Line Items]
Spread on variable rate (percent)	50.00%
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Line of Credit [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 200,000,000
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Foreign Line of Credit [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	20,000,000
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Accordion Feature [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	100,000,000
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Letter of Credit [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	20,000,000
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Swing Line Loan Credit [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 20,000,000