Note 5 - Operating Lease Right-of-use Asset, Net (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Lease, Cost [Table Text Block]

	December 31,			December 31,
	2021			2020
Straight-line rent expense recognized for operating lease	$	623		$	601
Variable rent expense recognized for operating lease		322			395
Total rent expense	$	945		$	996
Weighted average remaining lease term (in years)		5.1			1.0
Weighted average discount rate		10.74	%		12.05	%

Schedule of Operating Leases Cash Flow Information [Table Text Block]

	December 31,		December 31,
	2021		2020
Cash paid for amounts included in the measurement of lease liabilities	$	686	$	630
Cash lease expense (imputed interest expense component of net income)		43		103
Total rent expense	$	729	$	733

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

For the years ending December 31,
2022	$	424
2023		471
2024		485
2025		499
2026		514
Thereafter		43
Total undiscounted lease payments		2,436
Less imputed interest		568
Total operating lease liabilities	$	1,868