Subsequent Events (Details) - Subsequent Event	Oct. 27, 2015 USD ($) d $ / shares	Oct. 23, 2015 USD ($)
TriVascular Technologies, Inc.
Subsequent Event [Line Items]
Purchase price		$ 211,000,000
Equity interests issued and issuable		$ 187,000,000
Equity interest issued and issuable, percent		19.999%
Cash payments at closing		$ 24,000,000
Acquiree termination fee, percent		3.00%
Acquirer termination fee, percent		4.50%
Convertible Senior Notes Due 2020 \| Convertible Debt
Subsequent Event [Line Items]
Debt instrument face amount	$ 110,000,000
Stated interest rate	3.25%
Conversion of convertible securities	89.4314
Convertible conversion price \| $ / shares	$ 11.18
Threshold trading days \| d	20
Threshold consecutive trading days	30 years
Threshold percentage of stock price trigger	130.00%

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Business Combination, Acquirer Termination Fee, Percent

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Business Combination, Consideration Transferred, Equity Interest Issued and Issuable, Percent

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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 equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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The price per share of the conversion feature embedded in the debt instrument.

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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