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Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2015
Valuation and Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | PREFORMED LINE PRODUCTS COMPANY SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS Year Ended December 31, 2015, 2014 and 2013 (Thousands of dollars)
For the year ended December 31, 2015: |  | Balance at beginning of period |  |  | Additions charged to costs and expenses |  |  | Deductions |  |  | Other additions or deductions (a) |  |  | Balance at end of period |
Allowance for doubtful accounts |  | $ | 1,943 |  |  | $ | 524 |  |  | $ | (414 | ) |  | $ | (182 | ) |  | $ | 1,871 |
Reserve for credit memos |  |  | 428 |  |  |  | 437 |  |  |  | (408 | ) |  |  | (2 | ) |  |  | 455 |
Slow-moving and obsolete inventory reserves |  |  | 9,183 |  |  |  | 2,477 |  |  |  | (1,509 | ) |  |  | 79 |  |  |  | 10,230 |
Accrued product warranty |  |  | 892 |  |  |  | 74 |  |  |  | (158 | ) |  |  | (94 | ) |  |  | 714 |
Foreign net operating loss tax carryforwards |  |  | 3,614 |  |  |  | 2,105 |  |  |  | (287 | ) |  |  | (223 | ) |  |  | 5,209 |
For the year ended December 31, 2014: |  | Balance at beginning of period |  |  | Additions charged to costs and expenses |  |  | Deductions |  |  | Other additions or deductions (a) |  |  | Balance at end of period |
Allowance for doubtful accounts |  | $ | 1,441 |  |  | $ | 803 |  |  | $ | (260 | ) |  | $ | (41 | ) |  | $ | 1,943 |
Reserve for credit memos |  |  | 672 |  |  |  | 408 |  |  |  | (652 | ) |  |  | 0 |  |  |  | 428 |
Slow-moving and obsolete inventory reserves |  |  | 8,075 |  |  |  | 2,244 |  |  |  | (701 | ) |  |  | (435 | ) |  |  | 9,183 |
Accrued product warranty |  |  | 1,140 |  |  |  | (45 | ) |  |  | (133 | ) |  |  | (70 | ) |  |  | 892 |
Foreign net operating loss tax carryforwards |  |  | 1,420 |  |  |  | 2,553 |  |  |  | (232 | ) |  |  | (127 | ) |  |  | 3,614 |
For the year ended December 31, 2013: |  | Balance at beginning of period |  |  | Additions charged to costs and expenses |  |  | Deductions |  |  | Other additions or deductions (a) |  |  | Balance at end of period |
Allowance for doubtful accounts |  | $ | 1,395 |  |  | $ | 419 |  |  | $ | (368 | ) |  | $ | (5 | ) |  | $ | 1,441 |
Reserve for credit memos |  |  | 644 |  |  |  | 418 |  |  |  | (390 | ) |  |  | 0 |  |  |  | 672 |
Slow-moving and obsolete inventory reserves |  |  | 6,773 |  |  |  | 2,672 |  |  |  | (1,006 | ) |  |  | (364 | ) |  |  | 8,075 |
Accrued product warranty |  |  | 1,229 |  |  |  | 443 |  |  |  | (475 | ) |  |  | (57 | ) |  |  | 1,140 |
U.S. tax capital loss |  |  | 2,034 |  |  |  | 0 |  |  |  | (49 | ) |  |  | (1,985 | ) |  |  | 0 |
Foreign net operating loss tax carryforwards |  |  | 295 |  |  |  | 1,310 |  |  |  | (115 | ) |  |  | (70 | ) |  |  | 1,420 |
(a) | Other additions or deductions relate to translation adjustments and 2013 reflects the expiration of U.S. capital loss and certain foreign net operating loss carryforwards and 2014 reflects the expiration of certain foreign net operating loss carryforwards.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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