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Organization and Summary of Significant Accounting Policies - New Accounting Pronouncements (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred payments of social security tax	$ 15.2
Loss carryback related to the CARES Act [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Tax Expense (Benefit)	(14.4)
CARES Act [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from Income Tax Refunds	$ 31.0

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- Definition

Deferred payments of social security tax

+ References

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- Definition

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+ References

No definition available.

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- Definition

Amount of other income tax expense (benefit).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(1)(Note 1))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

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The amount of cash received during the period as refunds for the overpayment of taxes.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
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