Note 14 - Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2020

Notes Tables

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

	Shares			Weighted Average Grant Due Fair Value
Non-vested restricted stock units at September 30, 2018		2,207,242			7,302,000
Granted		1,810,017			5,400,000
Vested		(563,711	)		(2,261,000	)
Forfeited		(134,908	)		(435,000	)
Non-Vested restricted stock units at September 30, 2019		3,318,640			10,006,000
Granted		904,616			2,188,000
Vested		(663,736	)		(2,357,000	)
Forfeited		(61,205	)		(142,000	)
Non-vested restricted stock units at September 30, 2020		3,498,315			9,695,000

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

				Weighted		Weighted		Weighted
				Average		Average		Average
				Exercise		Grant-Date		Remaining		Aggregate
				Price		Fair Value		Contractual		Intrinsic
	Options			Per Share		Per Share		Term		Value
Outstanding at September 30, 2018		612,000		$	6.23	$	1.59		3.27
Forfeited or expired		(7,800	)		5.54		2.69
Outstanding at September 30, 2019		604,200			6.19		1.58		2.29
Forfeited or expired		(335,000	)		6.97		1.08
Outstanding at September 30, 2020		269,200			5.22		2.19		2.83
Vested and exercisable at September 30, 2020		269,200		$	5.22	$	2.19		2.83	$	—

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

					Weighted		Weighted
					Average		Average
					Exercise		Remaining
					Price		Contractual
	Warrants				Per Share		Term
Outstanding at September 30, 2018		12,436,427				3.25		3.30
Exercised		(38	)			3.25
Forfeited or expired		(7,037,482	)	(a)		3.25
Outstanding at September 30, 2019		5,398,907				3.25		2.30
Exercised		—				—
Forfeited or expired		—				—
Outstanding and exercisable at September 30, 2020		5,398,907			$	3.25		1.30