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Income Taxes - Expiration of Tax Net Operating Losses and Tax Credits Available (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Federal Tax Credits
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	$ 10,440
Federal Tax Credits | 2022-2032
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	0
Federal Tax Credits | 2033-2038
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	7,896
Federal Tax Credits | 2039-2043
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	2,544
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	30,509
Operating loss carryforwards	1,729
State and Local Jurisdiction | 2022-2032
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	0
Operating loss carryforwards	1,729
State and Local Jurisdiction | 2033-2038
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	1,002
Operating loss carryforwards	0
State and Local Jurisdiction | 2039-2043
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	29,507
Operating loss carryforwards	$ 0

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

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+ References

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-Topic 740
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-Section 50
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