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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Finite Lived Intangible Assets Accumulated Amortization Addition $ 95,000 $ 47,000 $ 285,000 $ 141,000