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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS | SCHEDULE II Simpson Manufacturing Co., Inc. and Subsidiaries VALUATION AND QUALIFYING ACCOUNTS for the years ended December 31, 2017, 2016 and 2015
Column A | Column B |  | Column C |  | Column D |  | Column E
|  |  | Additions |  |  |  |
|  |  | Charged |  | Charged |  |  |  |
| Balance at |  | to Costs |  | to Other |  |  |  | Balance
(in thousands) | Beginning |  | and |  | Accounts — |  |  |  | at End
Classification | of Year |  | Expenses |  | Write-offs |  | Deductions |  | of Year
Year to date December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 895 |  |  | $ | 66 |  |  |  |  |  | $ | (35 | ) |  | $ | 996 |
Allowance for sales discounts | 3,050 |  |  | (94 | ) |  | — |  |  | — |  |  | 2,956 |
Allowance for deferred tax assets | 6,868 |  |  | 5,765 |  |  |  |  |  | 1,519 |  |  | 11,114 |
Year to date December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | 1,142 |  |  | (83 | ) |  | — |  |  | 164 |  |  | 895 |
Allowance for sales discounts | 2,706 |  |  | 344 |  |  | — |  |  | — |  |  | 3,050 |
Allowance for deferred tax assets | 7,575 |  |  | 358 |  |  | — |  |  | 1,065 |  |  | 6,868 |
Year to date December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | 929 |  |  | 440 |  |  | — |  |  | 227 |  |  | 1,142 |
Allowance for sales discounts | 2,089 |  |  | 617 |  |  | — |  |  | — |  |  | 2,706 |
Allowance for deferred tax assets | 6,754 |  |  | 1,577 |  |  | — |  |  | 756 |  |  | 7,575 |

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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 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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