Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation. The condensed consolidated financial statements and accompanying notes thereto have been prepared in accordance with: (i) generally accepted accounting principles in the United States (“GAAP”) for interim financial information; and (ii) the guidance of Rule 10-01 of Regulation S-X under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), for financial statements required to be filed with the SEC. As permitted under such guidance, certain notes and other financial information normally required by GAAP have been omitted. Management believes the condensed consolidated financial statements reflect all normal and recurring adjustments necessary for a fair statement of the Company’s financial position, results of operations and cash flows as of and for the periods presented herein. These condensed consolidated financial statements are unaudited and should be read in conjunction with the Company’s audited consolidated financial statements and the notes thereto included in the 2020 Form 10-K. The December 31, 2020 year-end balance sheet data presented herein was derived from the Company’s audited consolidated financial statements included in the 2020 Form 10-K, but does not include all disclosures required by GAAP. The Company’s interim results of operations may not be indicative of its future results.
Consolidation, Policy [Policy Text Block]	Principles of Consolidation. The accompanying condensed consolidated financial statements include the accounts of the Company, including its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
Segment Reporting, Policy [Policy Text Block]	Segment Reporting. Accounting Standards Codification 280 - Segment Reporting requires the disclosure of factors used to identify an entity’s reportable segments. Based on the Company’s chief operating decision maker’s review and assessment of the Company’s operating performance for purposes of performance monitoring and resource allocation, the Company determined that its operations, including the decisions to allocate resources and deploy capital, are organized and managed on a consolidated basis. Accordingly, management has identified one operating segment, which is its reportable segment, under this organizational and reporting structure.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates. The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the amounts reported herein. Management bases its estimates and assumptions on historical experience and on various other factors that are believed to be reasonable under the circumstances. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may be affected by changes in those estimates and underlying assumptions.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Pronouncements. In August 2020, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 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. ASU 2020-06 simplifies the accounting for certain financial instruments with characteristics of both liabilities and equity by reducing the number of applicable accounting models, improving the decision usefulness and relevance of the information provided to financial statement users. As it relates to convertible instruments, this update amends existing guidance to reduce certain form-over-substance-based accounting conclusions, provides additional earnings per share guidance and improves disclosure effectiveness. The Company early adopted ASU 2020-06 on January 1, 2021 and accounted for the Convertible Notes (as defined and described in note 8) issued during the first quarter of 2021 under the updated guidance. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 removes certain exceptions related to intraperiod tax allocations, foreign subsidiaries and interim reporting that are present within existing GAAP. The ASU also provides updated guidance regarding the tax treatment of certain franchise taxes, goodwill and nontaxable entities, among other items. In addition, ASU 2019-12 clarifies that the effect of a change in tax laws or rates should be reflected in the annual effective tax rate computation during the interim period that includes the enactment date. Certain provisions must be adopted on prescribed retrospective, modified retrospective and prospective bases, while other provisions may be adopted on either a retrospective or modified retrospective basis. The Company adopted ASU 2019-12 on January 1, 2021 on a prospective basis. The adoption did not have a material impact on the Company’s consolidated financial statements upon adoption. *Recently Issued But Not* Yet Adopted Accounting Pronouncements.** In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference London Interbank Offered Rate (“LIBOR”) and other reference rates expected to be discontinued at the end of 2021. The ASU may be adopted at any time through December 31, 2022. The Company currently holds certain debt and interest rate swaps that reference LIBOR. The Company plans to adopt ASU 2020-04 when the contracts underlying such instruments are amended as a result of reference rate reform. The Company is currently evaluating the expected impact of the adoption of this guidance on its consolidated financial statements.

Basis of Accounting, Policy [Policy Text Block]

Basis of Presentation. The condensed consolidated financial statements and accompanying notes thereto have been prepared in accordance with: (i) generally accepted accounting principles in the United States (“GAAP”) for interim financial information; and (ii) the guidance of Rule 10-01 of Regulation S-X under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), for financial statements required to be filed with the SEC. As permitted under such guidance, certain notes and other financial information normally required by GAAP have been omitted. Management believes the condensed consolidated financial statements reflect all normal and recurring adjustments necessary for a fair statement of the Company’s financial position, results of operations and cash flows as of and for the periods presented herein. These condensed consolidated financial statements are unaudited and should be read in conjunction with the Company’s audited consolidated financial statements and the notes thereto included in the 2020 Form 10-K.

The December 31, 2020 year-end balance sheet data presented herein was derived from the Company’s audited consolidated financial statements included in the 2020 Form 10-K, but does not include all disclosures required by GAAP. The Company’s interim results of operations may not be indicative of its future results.

Segment Reporting, Policy [Policy Text Block]

Segment Reporting. Accounting Standards Codification 280 - Segment Reporting requires the disclosure of factors used to identify an entity’s reportable segments. Based on the Company’s chief operating decision maker’s review and assessment of the Company’s operating performance for purposes of performance monitoring and resource allocation, the Company determined that its operations, including the decisions to allocate resources and deploy capital, are organized and managed on a consolidated basis. Accordingly, management has identified one operating segment, which is its reportable segment, under this organizational and reporting structure.

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Adopted Accounting Pronouncements. In August 2020, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 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. ASU 2020-06 simplifies the accounting for certain financial instruments with characteristics of both liabilities and equity by reducing the number of applicable accounting models, improving the decision usefulness and relevance of the information provided to financial statement users. As it relates to convertible instruments, this update amends existing guidance to reduce certain form-over-substance-based accounting conclusions, provides additional earnings per share guidance and improves disclosure effectiveness. The Company early adopted ASU 2020-06 on January 1, 2021 and accounted for the Convertible Notes (as defined and described in note 8) issued during the first quarter of 2021 under the updated guidance.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 removes certain exceptions related to intraperiod tax allocations, foreign subsidiaries and interim reporting that are present within existing GAAP. The ASU also provides updated guidance regarding the tax treatment of certain franchise taxes, goodwill and nontaxable entities, among other items. In addition, ASU 2019-12 clarifies that the effect of a change in tax laws or rates should be reflected in the annual effective tax rate computation during the interim period that includes the enactment date. Certain provisions must be adopted on prescribed retrospective, modified retrospective and prospective bases, while other provisions may be adopted on either a retrospective or modified retrospective basis. The Company adopted ASU 2019-12 on January 1, 2021 on a prospective basis. The adoption did not have a material impact on the Company’s consolidated financial statements upon adoption.

Recently Issued But Not Yet Adopted Accounting Pronouncements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference London Interbank Offered Rate (“LIBOR”) and other reference rates expected to be discontinued at the end of 2021. The ASU may be adopted at any time through December 31, 2022. The Company currently holds certain debt and interest rate swaps that reference LIBOR. The Company plans to adopt ASU 2020-04 when the contracts underlying such instruments are amended as a result of reference rate reform. The Company is currently evaluating the expected impact of the adoption of this guidance on its consolidated financial statements.