Income Taxes - Additional Information (Detail)	6 Months Ended
	Sep. 30, 2016 USD ($)
Schedule Of Income Taxes [Line Items]
Tax net operating loss can be carried forward	20 years
U.S. federal
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards, amount	$ 0
U.S. federal | Earliest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2011
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	$ 300,000
States | Earliest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2011
States | Latest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2016