Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2019

Equity [Abstract]

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

	Year Ended September 30,
	2019	2018		2017
Unvested at beginning of year	—	140,668		174,334
Granted	283,195	—		—
Vested	—	(140,668	)	(31,409	)
Forfeited	—	—		(2,257	)
Unvested at end of year	283,195	—		140,668

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

	Shares	Weighted Average Exercise Price
Outstanding, September 30, 2016	79,500	$	6.43
Options granted	—	—
Exercised	33,750	6.46
Forfeited and canceled	—	—
Outstanding, September 30, 2017	45,750	$	6.42
Options granted	—	—
Exercised	1,500	7.21
Forfeited and canceled	—	—
Outstanding, September 30, 2018	44,250	$	6.39
Options granted	—	—
Exercised	22,500	6.43
Forfeited and canceled	—	—
Outstanding, September 30, 2019	21,750	$	6.35

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

Outstanding and Exercisable as of September 30, 2019	Remaining Contractual Life in Years	Weighted-Average Exercise Price
13,000	3.58	$5.76
1,000	5.29	$7.27
7,750	5.34	$7.21
21,750		$6.35