Note 10 - Long-term Incentive Plan (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Share-based Compensation Arrangements by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block]

Grant Date	Number of Units		Weighted Average Grant Date Fair Value(1)		Grant Date Total Fair Value (in thousands)
December 2016		10,950	$	6.85	$	75
December 2017		15,306	$	4.85	$	74
December 2018		23,436	$	1.20	$	28

Grant Date	Number of Units		Weighted Average Grant Date Fair Value(1)		Grant Date Total Fair Value (in thousands)
December 2016		10,220	$	6.85	$	70
December 2017		14,286	$	4.85	$	69
December 2018		21,875	$	1.20	$	26

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

Grant Date	Number of Units		Weighted Average Grant Date Fair Value(1)		Grant Date Total Fair Value (in thousands)
March 2017		323,339	$	7.15	$	2,312
March 2018		457,984	$	4.77	$	2,185
March 2019		524,997	$	1.14	$	598
June 2019		46,168	$	1.08	$	50

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

	Number of Units		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2018		998,219	$	5.88
Granted		571,165		1.14
Vested		366,282		4.80
Forfeited		104,758		4.10
Nonvested at September 30, 2019		1,098,344	$	3.45