Goodwill - Additional Information (Detail) - USD ($)	6 Months Ended
Jun. 30, 2020	Mar. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill		$ 51,889,000	$ 51,889,000
Goodwill impairment amount	$ 0
Goodwill [Member]
Goodwill [Line Items]
Goodwill		$ 51,900,000	$ 51,900,000

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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