Note 4 - Restructuring Activities (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Restructuring and Related Costs [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Total revenues	$	6		$	—		$	11		$	311
Net loss	$	(73	)	$	(80	)	$	(31	)	$	(1,469	)

	As of
	September 30, 2020		December 31, 2019
Total assets	$	3,134	$	4,249
Total liabilities		380		399
Total net assets	$	2,754	$	3,850

Schedule of Restructuring Reserve by Type of Cost [Table Text Block]

	Three Months Ended September 30,					Nine Months Ended September 30,
	2020		2019			2020		2019
Restructuring liability at beginning of period	$	—	$	155		$	—	$	65
Amounts expensed		—		—			—		625
Amounts paid		—		(155	)		—		(690	)
Restructuring liability at end of period	$	—	$	—		$	—	$	—