Note 5 - Leases - Lease Cost (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2020 USD ($)
Cash paid for amounts included in the measurement of lease liabilities	$ 215
Right-of-use assets obtained in exchange for lease obligations
Operating leases (Year)	7 years 182 days
Finance leases (Year)	3 years 73 days
Operating leases	4.80%
Finance leases	4.90%