Note 9 - Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Number of shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2018		826,582		$	5.35		2.8
Cancelled/Forfeited		(763,385	)		5.28
Outstanding at December 31, 2018		63,197		$	7.01		1.8
Expired		(20,914	)		8.64
Outstanding at December 31, 2019		42,283		$	6.20		0.8	$	-
Exercisable at December 31, 201 9		42,283		$	6.20		0.8	$	-

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

	Number of shares			Weighted- Average Grant Date Fair Value
Outstanding at January 1, 2018		327,283		$	1.82
Vested		(182,732	)		2.02
Granted		161,290			0.62
Cancelled/Forfeited/Expired		(101,266	)		1.55
Outstanding at December 31, 2018		204,575		$	0.83
Vested		(30,354	)		1.81
Granted		416,666			0.60
Cancelled/Forfeited /Expired		(161,290	)		0.62
Outstanding at December 31, 201 9		429,597		$	0.61