Other Operating Income, Net - Additional Information (Detail) - Other Operating Income, Net	3 Months Ended
Jun. 30, 2017 USD ($)
Component Of Other Income And Expense [Line Items]
Gain on sale of real estate	$ 13,500,000
Chief Financial Officer
Component Of Other Income And Expense [Line Items]
Retirement related expense including both cash and stock-based compensation	$ 6,100,000

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration