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SIGNIFICANT ACCOUNTING POLICIES - Warranty Costs (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Warranty accruals: |  |
Balance at beginning of year | $ 5,607 | $ 5,373
Less: Payments made during the year | (4,004) | (3,944)
Add: Warranty provision for the year | 3,788 | 3,901
Changes to warranty provision for prior years | 19 | 277
Balance at end of the year | $ 5,410 | $ 5,607
Warranty Costs |  |
Period of limited warranty on structural deck | 5 years |
Period of transferable limited warranty to original owner | 1 year |
Period of transferable hull warranty available to first subsequent owner | 5 years |
Length of period after original retail purchase the 5-year transferable hull warranty terminates | 5 years |
Minimum |  |
Warranty Costs |  |
Period of non-transferable warranty on additional items | 1 year |
Maximum |  |
Warranty Costs |  |
Period of non-transferable warranty on additional items | 5 years |

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- Definition Period after the date of the original retail purchase the five-year transferable hull warranty terminates. + References No definition available. + Details
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