Note 8 - Leases - Future Minimum Rental Payments for Operating Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
2020 (Remaining 3 months), operating leases	$ 598
2020 (Remaining 6 months), financing leases	59
2020 (Remaining 3 months)	657
2021, operating leases	2,304
2021, financing leases	170
2021	2,474
2022, operating leases	2,240
2022, financing leases	166
2022	2,406
2023, operating leases	2,123
2023, financing leases	160
2023	2,283
2024, operating leases	2,059
2024, financing leases	44
2024	2,103
2025, operating leases	1,924
Thereafter, operating leases	19,450
Thereafter, financing leases	0
Thereafter	19,450
Present value adjustment, operating leases	(8,103)
Present value adjustment, financing leases	(44)
Present value adjustment	(8,147)
Less current portion included in Accrued expenses and other current liabilities, operating leases	(1,463)	$ (1,141)
Less current portion included in Accrued expenses and other current liabilities, financing leases	(163)	0
Total lease liabilities, operating leases	21,132	$ 21,367
Total lease liabilities, financing leases	391
Total lease liabilities	21,523
Liabilities [Member]
Present value of lease payments, operating leases	22,595
Present value of lease payments, financing leases	555
Present value of lease payments	23,150
Accrued Expenses and Other Current Liabilities [Member]
Less current portion included in Accrued expenses and other current liabilities, operating leases	(1,463)
Less current portion included in Accrued expenses and other current liabilities, financing leases	(164)
Less current portion included in accrued expenses and other current liabilities	$ (1,627)