Intangible Assets (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets [Line Items]
Net carrying amount	$ 133,212,000	$ 154,195,000
Aggregate amortization expense	21,100,000us-gaap_AmortizationOfIntangibleAssets	24,700,000us-gaap_AmortizationOfIntangibleAssets	24,400,000us-gaap_AmortizationOfIntangibleAssets
2015	16,801,000
2016	12,416,000
2017	11,936,000
2018	10,194,000
2019	9,439,000
Acquired identifiable intangibles
Intangible Assets [Line Items]
Acquired identifiable intangibles,Gross	214,865,000	222,140,000
Less accumulated amortization	(87,997,000)	(70,517,000)
Net carrying amount	126,868,000	151,623,000
Product technology \| Acquired identifiable intangibles
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	67,620,000	69,919,000
Weighted average estimated useful life	11 years
Customer relationships \| Acquired identifiable intangibles
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	80,206,000	83,899,000
Weighted average estimated useful life	12 years
Trademarks and tradename portfolios \| Acquired identifiable intangibles
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	7,160,000	7,160,000
Weighted average estimated useful life	15 years
Other \| Acquired identifiable intangibles
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	21,562,000	21,996,000
Weighted average estimated useful life	5 years
Patents \| Nonacquired intangibles
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	9,905,000	4,471,000
Less accumulated amortization	(4,544,000)	(3,989,000)
Net carrying amount	5,361,000	482,000
Weighted average estimated useful life	7 years
Acquired in-place leases and other \| Nonacquired intangibles
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	9,309,000	9,333,000
Less accumulated amortization	(8,326,000)	(7,243,000)
Net carrying amount	983,000	2,090,000
Weighted average estimated useful life	7 years
Tradename not subject to amortization [Member] \| Acquired identifiable intangibles
Intangible Assets [Line Items]
Infinite-Lived Intangibles, Gross	$ 38,317,000	$ 39,166,000

Finite-Lived Intangible Assets, Gross Including Indefinite-Lived Intangible Assets

No definition available.

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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=26713463&loc=d3e16265-109275

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ 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 (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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- Definition

Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References