Note 11 - Fair Value Accounting (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

	As of December 31,
	2019				2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial assets:
Equity securities (Level 1)	$	-	$	-	$	1	$	1
Financial liabilities:
Senior notes (Level 3)	$	86,824	$	21,289	$	85,938	$	24,659

Fair Value Measurements, Nonrecurring [Table Text Block]

	December 31, 2019
	Fair Value (Level 3)		Gains and (Losses)
Goodwill	$	3,905	$	(4,300	)

Goodwill Activity:
Balance, December 31, 2018	$	8,205
Impairment charge		(4,300	)
Balance, December 31, 2019	$	3,905