Note 11 - Accrued Expenses (Details Textual) - Former Chief Executive Officer [Member] $ in Millions	Mar. 08, 2018 USD ($)
Severance Benefit Following Retirement	$ 1.7
Severance Benefit Following Retirement, Term	1 year 180 days

The period of time for the severance benefit to be paid following retirement.

No definition available.

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