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Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Finite Lived Intangible Assets Accumulated Amortization Addition $ 47,000 $ 125,000 $ 94,000 $ 130,000