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Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2020
Valuation And Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | PREFORMED LINE PRODUCTS COMPANY SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS Year Ended December 31, 2020, 2019 and 2018 (Thousands of dollars)
For the year ended December 31, 2020: |  | Balance at beginning of period |  |  | Additions charged to costs and expenses |  |  | Deductions |  |  | Other additions or deductions |  |  | Balance at end of period |
Allowance for doubtful accounts |  | $ | 3,224 |  |  | $ | 1,279 |  |  | $ | (1,527 | ) |  | $ | (128 | ) |  | $ | 2,848 |
Reserve for credit memos |  |  | 625 |  |  |  | 774 |  |  |  | (792 | ) |  |  | 9 |  |  |  | 616 |
Slow-moving and obsolete inventory reserves |  |  | 8,877 |  |  |  | 2,035 |  |  |  | (1,097 | ) |  |  | 85 |  |  |  | 9,900 |
Accrued product warranty |  |  | 1,309 |  |  |  | 279 |  |  |  | (314 | ) |  |  | 8 |  |  |  | 1,282 |
Foreign net operating loss tax carryforwards |  |  | 3,137 |  |  |  | 1,176 |  |  |  | (1,473 | ) |  |  | 72 |  |  |  | 2,912 |
For the year ended December 31, 2019: |  | Balance at beginning of period |  |  | Additions charged to costs and expenses |  |  | Deductions |  |  | Other additions or deductions |  |  | Balance at end of period |
Allowance for doubtful accounts |  | $ | 2,652 |  |  | $ | 1,294 |  |  | $ | (697 | ) |  | $ | (25 | ) |  | $ | 3,224 |
Reserve for credit memos |  |  | 526 |  |  |  | 817 |  |  |  | (739 | ) |  |  | 21 |  |  |  | 625 |
Slow-moving and obsolete inventory reserves |  |  | 8,462 |  |  |  | 1,283 |  |  |  | (1,104 | ) |  |  | 236 |  |  |  | 8,877 |
Accrued product warranty |  |  | 928 |  |  |  | 481 |  |  |  | (317 | ) |  |  | 217 |  |  |  | 1,309 |
Foreign net operating loss tax carryforwards |  |  | 3,495 |  |  |  | 153 |  |  |  | (499 | ) |  |  | (12 | ) |  |  | 3,137 |
For the year ended December 31, 2018: |  | Balance at beginning of period |  |  | Additions charged to costs and expenses |  |  | Deductions |  |  | Other additions or deductions |  |  | Balance at end of period |
Allowance for doubtful accounts |  | $ | 2,910 |  |  | $ | 449 |  |  | $ | (529 | ) |  | $ | (178 | ) |  | $ | 2,652 |
Reserve for credit memos |  |  | 415 |  |  |  | 802 |  |  |  | (688 | ) |  |  | (3 | ) |  |  | 526 |
Slow-moving and obsolete inventory reserves |  |  | 9,066 |  |  |  | 1,341 |  |  |  | (1,658 | ) |  |  | (287 | ) |  |  | 8,462 |
Accrued product warranty |  |  | 1,076 |  |  |  | 97 |  |  |  | (133 | ) |  |  | (112 | ) |  |  | 928 |
Foreign net operating loss tax carryforwards |  |  | 3,965 |  |  |  | 568 |  |  |  | (761 | ) |  |  | (277 | ) |  |  | 3,495 |

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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