Note 10 - Derivatives (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Apr. 01, 2021
Derivative, Gain (Loss) on Derivative, Net, Total		$ (65)	$ (0)
Interest Rate Cap [Member] | CBC Bank USA [Member]
Derivative, Notional Amount	$ 11,000	11,000		$ 11,900
Interest Rate Cap [Member] | CBC Bank USA [Member] | Maximum [Member]
Derivative, Gain (Loss) on Derivative, Net, Total	(100)
Payments For Settlement of Derivatives Operating Activities	100	100
Interest Rate Cap [Member] | CBC Bank USA [Member] | Interest Expense [Member]
Derivative, Gain (Loss) on Derivative, Net, Total	100
Interest Rate Cap [Member] | CBC Bank USA [Member] | Accrued Expenses and Other Liabilities [Member]
Derivative Liability, Total	$ 100	$ 100
Interest Rate Cap [Member] | CBC Bank USA [Member] | London Interbank Offered Rate (LIBOR) Swap Rate [Member]
Derivative, Fixed Interest Rate				1.18%