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ALLOWANCE FOR CREDIT LOSSES: | 9 Months Ended
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Dec. 31, 2020
Credit Loss [Abstract] |
ALLOWANCE FOR CREDIT LOSSES: | ALLOWANCE FOR CREDIT LOSSES: Trade accounts receivable are presented net of allowances for credit losses, returns and credits based on the probability of future collections. The probability of future collections is based on specific considerations of historical loss patterns and an assessment of the continuation of such patterns based on past collection trends and known or anticipated future economic events that may impair collectability. We are monitoring the impacts from the COVID-19 pandemic on our customers and various counterparties, and have recorded an incremental reserve associated with the pandemic during the three and nine months ended December 31, 2020. A summary of the activity of the allowance for credit losses, returns and credits was (dollars in thousands):
|  | Balance at beginning of period |  | Additions charged to costs and expenses |  | Other changes |  | Bad debts written off, net of amounts recovered |  | Balance at end of period
For the three months ended December 31, 2020 |  | $ | 9,012 |  |  | $ | 824 |  |  | $ | 72 |  |  | $ | (590) |  |  | $ | 9,318 |
For the nine months ended December 31, 2020 |  | $ | 7,575 |  |  | $ | 3,346 |  |  | $ | 128 |  |  | $ | (1,731) |  |  | $ | 9,318 |

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- Definition The entire disclosure for allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -URI http://asc.fasb.org/topic&trid=2196771 + Details
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- References No definition available. + Details
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