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Note 12 - Long Term Debt (Details Textual) $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Jun. 30, 2020 | Mar. 31, 2018 USD ($) | Jan. 31, 2018 USD ($)
Term Loan [Member] |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End | 8.40% |  |  |  |
Senior Secured Credit Facility [Member] |  |  |  |  |
Debt Instrument, Quarterly Payment, Current Year |  |  |  | $ 400 |
Debt Instrument Quarterly Payment Next Year |  |  |  | 600 |
Debt Instrument, Quarterly Payment, Thereafter |  |  |  | $ 800 |
Percentage of Consolidated Excess Cash Flow |  |  |  | 50.00% |
Excess Cash Flow Payment | $ 4,000 |  |  |  |
Excess Cash Flow Payment, Tranche Two |  | $ 4,000 |  |  |
Excess Cash Flow Payment, Tranche One |  | 1,000 |  |  |
Limitation On Pledges of Capital Stock of Foreign Subsidiaries | 65.00% |  |  |  |
Senior Secured Credit Facility [Member] | Maximum [Member] |  |  |  |  |
Debt Instrument, Leverage Ratio | 3.5 |  |  |  |
Senior Secured Credit Facility [Member] | Maximum [Member] | Forecast [Member] |  |  |  |  |
Debt Instrument, Leverage Ratio |  |  | 3.25 |  |
Senior Secured Credit Facility [Member] | Base Rate [Member] |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 4.75% |  |  |  |
Senior Secured Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 6.25% |  |  |  |
Senior Secured Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 1.25% |  |  |  |
Senior Secured Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.25% |  |  |  |
Senior Secured Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 25,000
Line of Credit Facility, Remaining Borrowing Capacity | $ 4,600 |  |  |  |
Term Loan [Member] |  |  |  |  |
Long-term Debt, Gross | $ 50,168 | $ 54,997 |  |  |
Term Loan [Member] | Senior Secured Credit Facility [Member] |  |  |  |  |
Long-term Debt, Gross |  |  |  |  | $ 64,000

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