Income Taxes - Additional Information (Detail) - USD ($)	6 Months Ended
	Sep. 30, 2017	Mar. 31, 2017
Schedule Of Income Taxes [Line Items]
Tax net operating loss can be carried forward	20 years
Increase in deferred tax valuation allowance against assets	$ 775,000
Deferred tax valuation allowance against assets	1,063,000
Deferred tax assets, gross	1,879,000	$ 1,080,000
U.S. federal
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards, amount	$ 1,900,000
U.S. federal | Earliest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2014
U.S. federal | Latest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2016
States
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards, amount	$ 4,800,000
States | Earliest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2012
States | Latest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2016