Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2014	Jul. 01, 2014	Mar. 31, 2014
Income Taxes [Line Items]
Long-term deferred tax liability	$ 6,865		$ 6,415
Amortization period of deferred tax liability (years)	15 years
Long-term deferred tax assets	$ 813	$ 874