Acquired Finite Lived Intangible Asset, Useful Life

No definition available.

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- Definition

Patents, Accumulated Amortization

+ References

No definition available.

+ Details

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- Definition

Patents, Gross

+ References

No definition available.

+ Details

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- Definition

Carrying value for patents, net of accumulated amortization.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

+ Details

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

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- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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- Details

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Patents (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
Patents (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Patents [Line Items]
Patents, net	$ 61,917				$ 86,319				$ 61,917	$ 86,319
Patents, weighted average useful life									4 years
Payments to acquire intangible assets									$ 0	1,225	$ 19,504
Impairment of Patent-Related Intangible Assets	0	$ 2,248	$ 0	$ 0	2,175	$ 0	$ 40,165	$ 0	$ 2,248	42,340	$ 74,731
Minimum [Member]
Patents [Line Items]
Patents, useful life									1 year
Acquired Finite Lived Intangible Asset, Useful Life									2 years
Maximum [Member]
Patents [Line Items]
Patents, useful life									6 years
Acquired Finite Lived Intangible Asset, Useful Life									7 years
Patents [Member]
Patents [Line Items]
Gross carrying amount - patents	444,137				444,362				$ 444,137	444,362
Accumulated amortization - patents	382,220				358,043				382,220	358,043
Patents, net	$ 61,917				$ 86,319				$ 61,917	$ 86,319
Patents [Member] \| Minimum [Member]
Patents [Line Items]
Patents, useful life									1 year
Patents [Member] \| Maximum [Member]
Patents [Line Items]
Patents, useful life									6 years