FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Other Than Derivatives) (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
$500 Million Revolving Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Credit facility, maximum borrowing capacity	$ 500,000
$160 Million Revolving Credit Facility [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Credit facility, maximum borrowing capacity	160,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	141,847	$ 116,922
Short-term investments	235,000	50,000
Fair Value, Inputs, Level 1 [Member] \| 2030 Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	(253,130)	(249,748)
Fair Value, Inputs, Level 2 [Member] \| BoComm Lease Financing
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	(171,114)	(174,713)
Fair Value, Inputs, Level 2 [Member] \| Toshin Lease Financing
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	(9,752)	(10,151)
Fair Value, Inputs, Level 2 [Member] \| Hyuga Lease Financing
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	(9,642)	(10,164)
Fair Value, Inputs, Level 2 [Member] \| Kaiyo Lease Financing
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	(8,508)	(9,485)
Fair Value, Inputs, Level 2 [Member] \| Kaisha Lease Financing
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	(8,499)	(8,921)
Fair Value, Inputs, Level 2 [Member] \| ECA Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value disclosure	$ (123,079)	$ (81,494)

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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