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Note 2 - Leases (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Lease, Cost [Table Text Block]

		December 31,
		2020				2019
Finance lease expense:
Amortization expense		$	425			$	481
Interest expense			261				348
Operating lease expense			1,406				1,406
Variable lease expense			317				272
Total lease expense		$	2,409			$	2,507

Supplemental Cash Flow Information Related to Leases [Table Text Block]

		December 31,
		2020				2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases		$	1,363			$	1,436
Operating cash flows from finance leases			261				348
Financing cash flows from finance leases			715				632

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

		Operating				Finance
		Leases				Leases
Next 12 months		$	1,476			$	612
12 to 24 months			1,492				612
24 to 36 months			1,509				612
36 to 48 months			1,318				559
48 to 60 months			1,231				550
Thereafter			1,700				46
Total lease payments			8,726				2,991
Less imputed interest			(1,820	)			(671	)
Total		$	6,906			$	2,320

Lease Terms and Discount Rates for Leases [Table Text Block]

		December 31,
		2020				2019
Weighted-average remaining lease term (years):
Operating leases			6.2				7.1
Finance leases			4.9				5.3

Weighted-average discount rate (percentage):
Operating leases			8.0				8.0
Finance leases			10.2				10.3