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Summary of Operating Loss Carryforwards (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	$ 17,449
Foreign Operating Loss Carryforwards		$ 3,991
2021
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	333
2022
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	2,203
2023
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	3,368
2024
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	812
2025
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	191
2026-2030
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	7,452
2031-2035
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	2,147
Foreign Operating Loss Carryforwards		68
Beyond 2035
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	73
Non-Expiring
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	$ 870
Foreign Operating Loss Carryforwards		$ 3,923

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319

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-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319

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