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Additional Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Changes in operating assets and liabilities, net of effect of businesses acquired [Abstract] |  |  |
Accounts receivable | $ (731)us-gaap_IncreaseDecreaseInReceivables | $ (16,870)us-gaap_IncreaseDecreaseInReceivables | $ 33,004 us-gaap_IncreaseDecreaseInReceivables
Inventories | (23,753)us-gaap_IncreaseDecreaseInInventories | (31,246)us-gaap_IncreaseDecreaseInInventories | (186)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets | (5,031)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 19,160 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 2,977 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Accounts payable | 9,339 us-gaap_IncreaseDecreaseInAccountsPayableTrade | 11,087 us-gaap_IncreaseDecreaseInAccountsPayableTrade | (9,408)us-gaap_IncreaseDecreaseInAccountsPayableTrade
Other current liabilities | (18,064)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities | 7,860 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities | (31,539)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities
Net change in operating assets and liabilities | $ (38,240)us-gaap_IncreaseDecreaseInOperatingCapital | $ (10,009)us-gaap_IncreaseDecreaseInOperatingCapital | $ (5,152)us-gaap_IncreaseDecreaseInOperatingCapital

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- Definition Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period of all assets and liabilities used in operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in other current operating liabilities not separately disclosed in the statement of cash flows. + References No definition available. + Details
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- Definition The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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