The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromDivestitureOfBusinesses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Asset Sale - Additional Information (Detail) $ in Thousands		3 Months Ended		6 Months Ended
Asset Sale - Additional Information (Detail) $ in Thousands	Oct. 11, 2018 USD ($) a	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Asset Sale [Line Items]
Pre-tax gain on the sale of property		$ 452	$ (4)	$ 454	$ (2)
Medical Office Building And Undeveloped Land [Member]
Asset Sale [Line Items]
Undeveloped land sold \| a	2
Proceeds from sale	$ 935
Pre-tax gain on the sale of property		$ 452