Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2021
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	(2) Recent Accounting Pronouncements: Recently Adopted Accounting Pronouncements Financial Instrument Credit LossesIn June 2016, The Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-13, “Financial Instruments – Credit Losses” (CECL or ASU 2016-13). This standard, along with its amendments, update the current financial statement impairment model requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain types of financial instruments, including trade receivables. For the Company, ASU 2016-13 is effective for fiscal years beginning after December 15, 2022, with early adoption permitted. Upon emergence from the Chapter 11 Cases, effective as of April 30, 2021, Frontier adopted the standard as part of its fresh start accounting policy changes. The adoption of CECL did not result in a material impact to our financial position or results of operations. Recent Accounting Pronouncements Not Yet Adopted Reference Rate ReformIn March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting”. This standard provides optional expedients, and allows for certain exceptions to existing GAAP, for contract modifications triggered by the expected market transition of certain benchmark interest rates to alternative reference rates. The standard applies to contracts and other arrangements that reference the London Interbank Offering Rate (LIBOR) or any other rates ending after December 31, 2022. Frontier is evaluating the impact of the adoption of this standard, including optional expedients, on our consolidated financial statements. Government Assistance In November 2021, the FASB issued ASU 2021-10, which requires business entities to disclose information about certain government assistance they receive. Such disclosure requirements include the nature of the transactions and the related accounting policy used, the line items on the balance sheet and income statement that are affected and the amounts applicable to each financial statement line item and significant terms and conditions of the transactions. ASU 2021-10 will be effective for annual periods beginning after December 15, 2021 (year ending December 31, 2022 for the Company). Early adoption is permitted. The Company is currently evaluating the impact the adoption of ASU 2021-10 will have on its disclosures.