XML 131 R96.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Fair value measurements and derivative instruments (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Fair Value Disclosures [Abstract] |
Schedule Of Fair Value Of Derivatives Designated As Fair Value Hedges |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | Asset derivatives |  | Liability derivatives |
|  | Location |  | Fair value |  | Location |  | Fair value |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
As of December 31, 2017 |  |  |  |  |  |  |  |  |
Derivatives designated as cash flow hedges: |  |  |  |  |  |  |  |  |
Commodity derivative contracts |  | Prepaid and other current assets |  | $ | 2,518 |  | Other accrued liabilities |  | $ | — |
|  | Other long-term assets |  | 2,808 |  | Other long-term obligations |  | 581 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total fair value |  |  |  | $ | 5,326 |  |  |  | $ | 581 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | Asset derivatives |  | Liability derivatives |
|  | Location |  | Fair value |  | Location |  | Fair value |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | (Dollars in thousands) |
As of December 31, 2017 |  |  |  |  |  |  |  |  |
Derivatives not designated as hedges: |  |  |  |  |  |  |  |  |
Foreign currency derivatives |  | Prepaid and other current assets |  | $ | 9 |  | Other current liabilities |  | $ | 90 |
As of December 31, 2016 |  |  |  |  |  |  |  |  |
Derivatives not designated as hedges: |  |  |  |  |  |  |  |  |
Foreign currency derivatives |  | Prepaid and other current assets |  | $ | 10 |  | Other current liabilities |  | $ | 188 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule Of Realized (Gains) Losses On Derivatives Recognized In Statement Of Operations |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  |  | Amount of (gain)/loss recognized |
|  | Location of (gain)/loss recognized in the consolidated statement of income |  | 2017 |  | 2016 |  | For the period August 15 through December 31, 2015 |  | For the period January 1 through December August 14, 2015 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  |  | (Dollars in thousands) |
Derivatives designated as cash flow hedges: |  |  |  |  |  |  |  |  |  |  |
Foreign currency derivatives, excluding tax of $0, $32, $17 and $106, respectively |  | Revenue/Cost of goods sold /Other expense /(income) |  | $ | — |  | $ | (322 | ) | $ | (172 | ) | $ | (1,062 | )
Commodity forward derivatives, excluding tax of ($424) |  | Cost of goods sold |  | $ | — |  | $ | — |  | $ | — |  | $ | 1,161 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  |  | Amount of (gain)/loss recognized |
|  | Location of (gain)/loss recognized in the consolidated statement of income |  | 2017 |  | 2016 |  | For the period August 15 through December 31, 2015 |  | For the period January 1 through December August 14, 2015 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  |  | (Dollars in thousands) |
Derivatives not designated as hedges: |  |  |  |  |  |  |  |  |  |  |
Foreign currency derivatives |  | Cost of goods sold, Other expense/(income) |  | $ | (1,565 | ) | $ | 549 |  | $ | (560 | ) | $ | 1,060 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of derivative instruments (including nonderivative instruments that are designated and qualify as hedging instruments) of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 + Details
Name: | us-gaap_ScheduleOfDerivativesInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for fair value hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
Name: | us-gaap_ScheduleOfFairValueHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration