Debt Instrument, Convertible Trading Days Following Effective Date Of Mergers

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- Definition

Debt Instrument, Event Of Default Minimum Percentage Of Principal Amount

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Percentage Of Repurchase Price To Principal Amount If Company Defaults

+ References

No definition available.

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- Definition

Debt Instrument, Percentage Of Repurchase Price To Principal Amount If Company Undergoes Fundamental Change

+ References

No definition available.

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- Definition

Debt Instrument, Principal Amount Used For Conversion

+ References

No definition available.

+ Details

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- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Convertible Security
-URI http://asc.fasb.org/extlink&oid=6509036

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Conversion Rate
-URI http://asc.fasb.org/extlink&oid=6509012

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

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Debt Debt - Convertible Senior Notes Narrative (Details)		12 Months Ended
	Dec. 31, 2017 USD ($) $ / shares	Dec. 31, 2017 USD ($) $ / shares	Nov. 16, 2017 USD ($)	Jan. 31, 2017 USD ($)	Jul. 31, 2014 USD ($)
Debt Instrument [Line Items]
Principal Amount	$ 575,000,000	$ 575,000,000
Debt instrument, principal amount used for conversion	$ 1,000	$ 1,000
Debt instrument, percentage of repurchase price to principal amount if company undergoes fundamental change	100.00%	100.00%
Debt instrument, event of default minimum percentage of principal amount	25.00%	25.00%
Debt instrument, percentage of repurchase price to principal amount if company defaults	100.00%	100.00%
3.50% Convertible Senior Note \| 2019 Convertible Notes
Debt Instrument [Line Items]
Principal Amount	$ 230,000,000	$ 230,000,000			$ 230,000,000
Coupon Rate	3.00%	3.00%			3.00%
Convertible debt, fair value disclosures			$ 223,185,000
Debt instrument, principal amount used for conversion	$ 1,000	$ 1,000
Debt instrument, convertible, conversion ratio	53.0969	53.0969
Debt instrument, convertible conversion price \| $ / shares	$ 18.83	$ 18.83
Debt instrument, convertible trading days following effective date of mergers	35 days
3.00% Convertible Senior Note \| 2022 Convertible Notes
Debt Instrument [Line Items]
Principal Amount	$ 345,000,000	$ 345,000,000		$ 345,000,000
Coupon Rate	3.50%	3.50%		3.50%
Convertible debt, fair value disclosures			$ 324,252,000
Debt instrument, principal amount used for conversion	$ 1,000	$ 1,000
Debt instrument, convertible, conversion ratio	43.7694	43.7694
Debt instrument, convertible conversion price \| $ / shares	$ 22.85	$ 22.85
Debt instrument, convertible trading days following effective date of mergers	35 days