Annual report pursuant to Section 13 and 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 12 Months Ended
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2017
Mar. 31, 2016
Restructuring And Related Activities [Abstract]        
Balance at beginning of year   $ 74 $ 74 $ 1,718
Expense (income) for restructuring $ 75 $ 555 630 (3)
Amounts paid for restructuring     (584) (1,641)
Balance at end of year     $ 120 $ 74