Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended					9 Months Ended		48 Months Ended
	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2013
Schedule Of Income Taxes [Line Items]
Possible additional federal and state income taxes estimated from the income tax assessment								$ 3,000
Provision for income tax expense (benefit)	$ 59	$ 1,600	$ 882	$ 500	$ 900	$ (12)	$ 1,114
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	400					$ 400
States
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards, amount	300					300
Maximum
Schedule Of Income Taxes [Line Items]
Estimated income taxes liability, penalties and interest accrued	$ 600					600
Estimated income taxes liability, penalties and interest recorded as income tax expense		$ 100	$ 400			$ 100