Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature, Gross

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- Definition

Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature, Reduction

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No definition available.

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Debt Instrument, Convertible, Threshold Consecutive Business Days

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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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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Remaining amortization period for discount on the liability component of convertible debt which may be settled in cash upon conversion, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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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.

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Percentage of principal amount of debt redeemed.

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Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Cash paid for expenses incurred during underwriting activities (the process to review insurance applications, evaluate risks, accept or reject applications, and determine the premiums to be charged) for insurance companies.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Debt - Senior Unsecured Notes (Details)	1 Months Ended	12 Months Ended
Debt - Senior Unsecured Notes (Details)	Aug. 31, 2014 USD ($) d $ / shares	Dec. 31, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Mar. 31, 2015 USD ($)
Debt Instrument [Line Items]
Proceeds from mortgage notes payable		$ 50,000,000	$ 0	$ 191,000,000
Senior unsecured notes		590,388,000	587,018,000
Interest expense		71,147,000	67,492,000	66,456,000
Amortization of deferred financing costs		$ 5,000,000	6,100,000	7,600,000
Convertible Debt [Member] \| Exchangeable Senior Notes due August 15, 2019 [Member]
Debt Instrument [Line Items]
Face amount	$ 250,000,000
Stated interest rate	2.625%	2.625%
Proceeds from mortgage notes payable	$ 246,900,000
Conversion price (USD per share) \| $ / shares	$ 19.45	$ 19.39
Debt, conversion ratio	0.0514059	0.0515600
Percentage of principal amount redeemed	100.00%
Effective interest rate	3.80%	3.93%
Senior unsecured notes	$ 236,600,000
Embedded conversion option		$ 13,400,000	13,400,000
Remaining discount amortization period	5 years
Unamortized discount		7,000,000	9,700,000
Underwriting expense	$ 3,100,000
Deferred finance costs	$ 2,900,000
Embedded conversion feature, embedded		200,000	200,000
Interest expense on note		9,900,000	9,900,000	3,800,000
Interest expense		6,600,000	6,600,000	2,500,000
Accretion of debt discount		2,700,000	2,700,000	1,100,000
Amortization of deferred financing costs		$ 600,000	$ 600,000	$ 200,000
Senior Notes [Member] \| Series A, Series B, and Series C Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Face amount					$ 350,000,000
Senior Notes [Member] \| Series A Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Face amount					$ 100,000,000
Stated interest rate		3.93%			3.93%
Effective interest rate		4.03%
Senior Notes [Member] \| Series B Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Face amount					$ 125,000,000
Stated interest rate		4.09%			4.09%
Effective interest rate		4.19%
Senior Notes [Member] \| Series C Senior Notes due 2030 [Member]
Debt Instrument [Line Items]
Face amount					$ 125,000,000
Stated interest rate		4.18%			4.18%
Effective interest rate		4.28%
Covenant scenario one [Member] \| Convertible Debt [Member] \| Exchangeable Senior Notes due August 15, 2019 [Member]
Debt Instrument [Line Items]
Threshold percentage of stock price trigger	130.00%
Threshold trading days \| d	20
Threshold consecutive trading days	30 days
Covenant scenario two [Member] \| Convertible Debt [Member] \| Exchangeable Senior Notes due August 15, 2019 [Member]
Debt Instrument [Line Items]
Threshold percentage of stock price trigger	98.00%
Threshold consecutive business days	5 days