Note 7 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Lease, Cost [Table Text Block]

	Year ended
	December 31,
	2019
	(in thousands)
Lease cost
Operating lease cost	$	1,756
Short-term lease cost		291
Total lease cost	$	2,047
Other information
Cash paid for amounts included in the measurement of operating lease liabilities	$	1,858
Right-of-use assets obtained in exchange for new operating lease liabilities	$	10,571
Weighted average remaining lease term - operating leases (years)		8.3
Weighted average discount rate - operating leases		5.25	%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Year ending December 31,
2020	$	2,419
2021		2,351
2022		1,942
2023		1,686
2024		1,573
Thereafter		10,301
Adjustment to net present value as of December 31, 2019		(4,560	)
Minimum noncancelable lease liability	$	15,712