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REVENUE RECOGNITION AND RECEIVABLES - Allowance for Credit Losses - (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Allowance for Credit Loss |  |
Gross accounts receivable | $ 67,114 | $ 48,628
Current accounts receivable | 57,500 | 48,600
Allowance for credit loss | 12,121 | $ 12,724
Other Assets |  |
Allowance for Credit Loss |  |
Noncurrent accounts receivable | $ 9,600 |

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