Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended						48 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Mar. 31, 2013	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)	$ 31	$ 1,600		$ 205	$ 500	$ 900
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	$ 1,500
States
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards, amount	300
Maximum
Schedule Of Income Taxes [Line Items]
Estimated income tax adjustment liable for taxes, penalties and interest	$ 500	$ 100	$ 400