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Derivative Financial Instruments - (Tables) | 12 Months Ended
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Dec. 31, 2017
Derivative Financial Instruments [Abstract] |
Schedule Of Contracts Designated And Not Designated As Hedged Instruments | ﻿
﻿ |  |  |  |
﻿ |  | December 31, 2017
﻿ |  | Notional |  | Latest
﻿ |  | Amount |  | Maturity
﻿ |  |  |  |
﻿Foreign exchange contracts - Norwegian Kroner |  | 2,629 |  | February 2018
﻿Foreign exchange contracts - Canadian Dollars |  | 9,538 |  | February 2019
﻿Foreign exchange contracts - British Pounds |  | 1,737 |  | February 2019
﻿Foreign exchange contracts - Euros |  | 15,928 |  | February 2019
﻿ ﻿
﻿ |  |  |  |
﻿ |  | December 31, 2016
﻿ |  | Notional |  | Latest
﻿ |  | Amount |  | Maturity
﻿ |  |  |  |
﻿Foreign exchange contracts - Canadian Dollars |  | 11,001 |  | February 2018
﻿Foreign exchange contracts - British Pounds |  | 1,842 |  | February 2018
﻿Foreign exchange contracts - Euros |  | 14,366 |  | February 2018
﻿
Schedule Of Derivative Instruments Fair Value And Balance Sheet Classification |
﻿ |  |  |  |  |  |  |  |
﻿ |  | Classification |  | December 31, 2017 |  | December 31, 2016
﻿ |  |  |  |  |  |  |  |
﻿Derivative instruments in asset positions: |  |  |  |  |  |  |  |
﻿Forward exchange contracts |  | Prepaid and other current assets |  | $ | 40 |  | $ | 1,165
﻿Forward exchange contracts |  | Other long-term assets |  | $ | 6 |  | $ | 116
﻿ |  |  |  |  |  |  |  |
﻿Derivative instruments in liability positions: |  |  |  |  |  |  |  |
﻿Forward exchange contracts |  | Accounts payable and accrued liabilities |  | $ | 919 |  | $ | -
﻿Forward exchange contracts |  | Other long-term liabilities |  | $ | 74 |  | $ | -
﻿

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- Definition Tabular disclosure of the presentation of foreign exchange contracts on the statement of financial position, including the fair value amounts and location of such amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 + Details
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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959 + Details
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