Assets Held for Sale - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
Mar. 31, 2020	Sep. 30, 2020
Long Lived Assets Held For Sale [Line Items]
Proceeds from sale of property		$ 14,218,000
Irvine, California Property [Member]
Long Lived Assets Held For Sale [Line Items]
Proceeds from sale of property	$ 14,218,000
Other Current Assets [Member]
Long Lived Assets Held For Sale [Line Items]
Properties held for sale		$ 68,916,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth.

+ References

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 (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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- Definition

Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(f))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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