Subsequent Events - Additional Information (Detail) - Medical Office Building And Undeveloped Land [Member] $ in Thousands		3 Months Ended
Oct. 11, 2018 USD ($) a	Dec. 31, 2018 USD ($)
Scenario, Forecast [Member]
Subsequent Event [Line Items]
Earnings (Loss) before income taxes		$ 452
Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from sale	$ 935
Undeveloped land to sale \| a	2

Amount before tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until its disposal.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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