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SIGNIFICANT ACCOUNTING POLICIES - CASH AND ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash and Cash Equivalents |  |  |
Outstanding checks in excess of funds on deposits | $ 0.0 | $ 19.9 |
Restricted cash | 5.3 | 5.3 |
Allowance for doubtful accounts |  |  |
Balance at Beginning of year | 6.3 | 4.3 | $ 4.8
Expense | 4.2 | 2.9 | 0.6
Write-offs and Other | (0.4) | (0.9) | (1.1)
Balance at End of Year | 10.1 | 6.3 | $ 4.3
Prepaid and Other Assets: |  |  |
Income tax receivables | 23.1 | 0.3 |
Prepaid fuel | 22.6 | 10.8 |
Prepaid insurance and insurance related receivables | 10.1 | 7.5 |
Restricted cash - vessel construction obligations | 5.3 | 5.3 |
Other | 17.3 | 14.2 |
Total | 78.4 | 38.1 |
Other Long-term Assets |  |  |
Vessel and equipment spare parts | 12.8 | 11.5 |
Insurance related receivables | 10.4 | 10.5 |
Other | 16.2 | 11.0 |
Total | $ 39.4 | $ 33.0 |

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