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Schedule II - VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2016
Valuation And Qualifying Accounts [Abstract] |
Schedule II - VALUATION AND QUALIFYING ACCOUNTS | NANOMETRICS INCORPORATED VALUATION AND QUALIFYING ACCOUNTS Our allowance for doubtful accounts receivable consists of the following (in thousands):
Year Ended |  | Balance at beginning of period |  |  | Additions to Allowance |  |  | Charges Utilized/Write-offs |  |  | Balance at end of period |
December 31, 2016 |  | $ | 150 |  |  | $ | — |  |  | $ | (77 | ) |  | $ | 73 |
December 26, 2015 |  | $ | 253 |  |  | $ | 10 |  |  | $ | (113 | ) |  | $ | 150 |
December 27, 2014 |  | $ | 293 |  |  | $ | — |  |  | $ | (40 | ) |  | $ | 253 |
Our valuation allowance for deferred tax assets consists of the following (in thousands):
Year Ended |  | Balance at beginning of period |  |  | Additions to Allowance |  |  | Charges Utilized/Write-offs |  |  | Balance at end of period |
December 31, 2016 |  | $ | 36,786 |  |  | $ | 1,643 |  |  | $ | (27,449 | ) |  | $ | 10,980 |
December 26, 2015 |  | $ | 35,835 |  |  | $ | 951 |  |  | $ | — |  |  | $ | 36,786 |
December 27, 2014 |  | $ | 11,665 |  |  | $ | 24,170 |  |  | $ | — |  |  | $ | 35,835 |

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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 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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