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.

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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.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Acquisition (Additional Information) (Details) (USD $)	3 Months Ended		0 Months Ended	2 Months Ended
Acquisition (Additional Information) (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Jan. 22, 2015	Mar. 31, 2015
Business Acquisition [Line Items]
Weighted average amortization period	5 years 6 months
Annual amortization expense	$ 2,400,000us-gaap_AmortizationOfIntangibleAssets	$ 1,500,000us-gaap_AmortizationOfIntangibleAssets
Annual Future Amortization Expense
Anticipated future amortization expense for remainder of 2015	8,000,000			8,000,000
Anticipated future amortization expense for 2016	10,200,000			10,200,000
Anticipated future amortization expense for 2017	9,900,000			9,900,000
Anticipated future amortization expense for 2018	9,400,000			9,400,000
Anticipated future amortization expense for 2019	8,900,000			8,900,000
Customer relationships [Member]
Business Acquisition [Line Items]
Weighted average amortization period	6 years 1 month
Arlon [Member]
Business Acquisition [Line Items]
Consideration transferred			157,000,000
Intangible assets			50,020,000
Annual Future Amortization Expense
Anticipated future amortization expense for remainder of 2015			4,400,000
Anticipated future amortization expense for 2016			5,800,000
Anticipated future amortization expense for 2017			5,800,000
Anticipated future amortization expense for 2018			5,800,000
Anticipated future amortization expense for 2019			5,800,000
Transaction costs	1,500,000			1,500,000
Revenues				20,200,000
Arlon [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Annual amortization expense			1,800,000
Arlon [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Annual amortization expense			5,300,000
Arlon [Member] \| Developed technology [Member]
Business Acquisition [Line Items]
Intangible assets			15,800,000
Weighted average amortization period			5 years 8 months
Arlon [Member] \| Customer relationships [Member]
Business Acquisition [Line Items]
Intangible assets			32,700,000
Weighted average amortization period			6 years 0 months
Arlon [Member] \| Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets			1,600,000
Weighted average amortization period			3 years 2 months
Arlon [Member] \| Revolving Credit Facility [Member]
Business Acquisition [Line Items]
Proceeds from line of credit	$ 125,000,000		$ 125,000,000