Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charge - Summary of Reconciliation of Changes in Restructuring Reserve (Detail)

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Restructuring Charge - Summary of Reconciliation of Changes in Restructuring Reserve (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2016
Sep. 30, 2016
Restructuring And Related Activities [Abstract]    
Balance at beginning of year   $ 74
Expense for restructuring $ 75 630
Amounts paid for restructuring   (475)
Balance at end of year $ 229 $ 229