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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2014
Fair Value Disclosures [Abstract] |
Assets Measured at Fair Value on a Recurring Basis, Categorized by the Level of Inputs Used in the Valuation | From time to time we enter into various instruments that require fair value measurement, including foreign currency option contracts, interest rate swaps and copper derivative contracts. Assets and liabilities measured on a recurring basis, categorized by the level of inputs used in the valuation, include:
(Dollars in thousands) |  | Carrying amount as of March 31, 2014 |  | Level 1 |  | Level 2 |  | Level 3
Foreign currency contracts |  | — |  |  | — |  |  | — |  |  | — |
Copper derivative contracts |  | 495 |  |  | — |  |  | 495 |  |  | — |
Interest rate swap |  | (269 | ) |  | — |  |  | (269 | ) |  | — |
(Dollars in thousands) |  | Carrying amount as of December 31, 2013 |  | Level 1 |  | Level 2 |  | Level 3
Foreign currency contracts |  | (77 | ) |  | — |  |  | (77 | ) |  | — |
Copper derivative contracts |  | 984 |  |  | — |  |  | 984 |  |  | — |
Interest rate swap |  | (296 | ) |  | — |  |  | (296 | ) |  | — |
Assets measured at fair value on a nonrecurring basis | The following table presents information about our assets and liabilities measured at fair value on a non-recurring basis as of December 31, 2013, aggregated by the level in the fair value hierarchy within which those measurements fall. This Level 3 asset represents the investment in Solicore, Inc.
(Dollars in thousands) | Carrying amount as of December 31, 2013 |  | Level 1 |  | Level 2 |  | Level 3
Solicore investment | $ | 507 |  |  | $ | — |  |  | $ | — |  |  | $ | 507 |
The table below sets forth a summary of changes in the fair value of the Solicore investment Level 3 asset for the year ended December 31, 2013.
(Dollars in thousands) | Solicore investment
Balance at beginning of year | $ | 5,000 |
Cash investment | 127 |
Impairment reported in earnings | (4,620 | )
Balance at end of year | $ | 507 |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19296-110258 + Details
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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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