Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
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Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Subsequent Event (Detail) - USD ($) $ in Thousands		3 Months Ended
Subsequent Event (Detail) - USD ($) $ in Thousands	Apr. 17, 2020	Mar. 31, 2020	Mar. 31, 2019	May 15, 2020
Subsequent Event [Line Items]
Restructuring charge		$ 0	$ 248
Subsequent Event
Subsequent Event [Line Items]
Percentage of workforce reduction	26.00%
Restructuring charge	$ 1,700
PPP Loan \| Subsequent Event
Subsequent Event [Line Items]
Debt instrument, face amount				$ 10,000