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Schedule II - Valuation and Qualifying Accounts Schedule II Valuation and Qualifying Accounts (Notes) | 12 Months Ended
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Dec. 31, 2015
Valuation and Qualifying Accounts Disclosure [Line Items] |
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | Schedule II -Valuation and Qualifying Accounts The roll forward of valuation accounts were as follows:
| (Dollars in thousands)
Description | Balance at Beginning of Period |  | Charged to Costs and Expenses |  | Deductions |  | Balance at End of Period
Allowance for doubtful accounts: |  |  |  |  |  |  |
Year ended December 31, 2015 | $ | 733 |  |  | $ | 353 |  |  | $ | (543 | ) | (1) | $ | 543 |
Year ended December 31, 2014 | 828 |  |  | 715 |  |  | (810 | ) | (1) | 733 |
Year ended December 31, 2013 | 1,637 |  |  | 126 |  |  | (935 | ) | (1) | 828 |
Valuation allowance for deferred tax assets: |  |  |  |  |  |  |
Year ended December 31, 2015 | $ | 36,675 |  |  | $ | (159 | ) |  | $ | — |  |  | $ | 36,516 |
Year ended December 31, 2014 | 35,834 |  |  | 841 |  |  | — |  |  | 36,675 |
Year ended December 31, 2013 | 34,278 |  |  | 1,556 |  |  | — |  |  | 35,834 |
(1) | Uncollected receivables written off, net of recoveries and translation adjustments.

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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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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