Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

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+ References

No definition available.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Business segments - Geography, Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 339,836	$ 333,650	$ 326,754	$ 318,854	$ 383,915	$ 454,540	$ 523,491	$ 587,911	$ 1,319,094	$ 1,949,857	$ 1,931,042
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									808,912	1,373,714	1,370,570
Long-Lived Assets	395,107				408,722				395,107	408,722	497,057
Iceland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									510,182	576,143	560,472
Long-Lived Assets	625,897				801,268				625,897	801,268	831,507
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 78,701				$ 94,421				$ 78,701	$ 94,421	$ 95,752