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Basis of Presentation and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Basis of Presentation and Significant Accounting Policies

Schedules of Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Description		Adoption Date		Effect on Financial Statements
In December 2019, the FASB issued Accounting Standard Update (“ASU”) 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application.	​	First quarter of 2021	​	The adoption of this guidance did not have a material impact on our consolidated financial statements.	​

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Recently Issued Accounting Pronouncements

Description		Effective Date		Effect on Financial Statements
In August 2020, the FASB issued ASU 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity. This guidance reduces the number of accounting models for convertible debt instruments. Upon adoption of this guidance, convertible debt proceeds will no longer be allocated between debt and equity components, reducing the unamortized debt discount and lowering interest expense. This guidance also changes the method used to calculate diluted earnings per share when an instrument may be settled in cash or shares, if the effect is dilutive.	​	First quarter of 2022 with early adoption permitted beginning in the first quarter of 2021	​	We adopted this guidance on January 1, 2022 using the modified retrospective method of transition. Upon adoption, we reclassified the remaining equity component from equity to our convertible senior unsecured notes liability and ceased the amortization of the debt discount through interest expense. Additionally, this guidance will require us to use the if-converted method for the diluted net income per share calculation for our convertible instruments, regardless of our settlement intent. The adoption of this guidance resulted in an aggregate decrease to our additional paid-in capital of approximately $8.7 million and an aggregate increase to our retained earnings of approximately $6.2 million at January 1, 2022.	​

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Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=124437754&loc=d3e765-108305

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=124437754&loc=d3e725-108305

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794

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