Summary of Significant Accounting Policies - Loss Per Share (Details) - USD ($)		3 Months Ended						9 Months Ended
	Oct. 16, 2019	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Oct. 31, 2019	Oct. 31, 2018
Basic and Diluted loss per share:
Net loss		$ (164,000)	$ (608,000)	$ 313,000	$ (678,000)	$ (1,521,000)	$ (569,000)	$ (459,000)	$ (2,768,000)
Add: Redemption of Series A Preferred Stock		4,894,000						4,894,000
Net income (loss) attributable to common shareholders		$ 4,730,000			$ (678,000)			$ 4,435,000	$ (2,768,000)
Weighted average shares - Basic (1)		21,598,146			19,655,882			20,435,055	19,495,745
Weighted average shares outstanding - Diluted		21,598,146			19,655,882			20,435,055	19,495,745
Basic net income (loss) per common stock (in dollars per share)		$ 0.22			$ (0.03)			$ 0.22	$ (0.14)
Diluted net loss per common stock (in dollars per share)		$ (0.01)			$ (0.03)			$ (0.02)	$ (0.14)
Series A Convertible Preferred Stock
Calculation of the basic and diluted net earnings (loss) per share of common stock
Antidilutive securities (in shares)		2,895,464						2,895,464
Stock Option
Calculation of the basic and diluted net earnings (loss) per share of common stock
Antidilutive securities (in shares)		938,671			1,612,990			938,671	1,612,990
Restricted Stock
Calculation of the basic and diluted net earnings (loss) per share of common stock
Unvested restricted shares considered non-participating securities								1,185,918
Antidilutive securities (in shares)		1,185,918			2,239,047			1,185,918	2,239,047
Series A Preferred Stock
Basic and Diluted loss per share:
Add: Redemption of Series A Preferred Stock	$ 4,894,000							$ 4,894,000