Debt - Convertible Debt (Details) - Convertible Debt [Member]	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 25, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Aggregate balance outstanding	$ 271,633,000		$ 321,802,000
Unamortized discount	$ 761,000		$ 1,855,000
2020 Convertible Notes [Member]
Debt Instrument [Line Items]
Debt repurchase amount		$ 50,200,000
Interest rate	3.75%	3.75%
Aggregate balance outstanding	$ 271,600,000
Carrying value conversion options in additional paid-in capital	12,100,000
Unamortized discount	$ 800,000
Remaining amortization period	6 months
Conversion rate	0.0667249
Amount of General Partner OP Units per principal amount	$ 1,000

Amount of increase (decrease) in additional paid in capital (APIC) resulting from recognition of deferred taxes for convertible debt with a beneficial conversion feature.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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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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Fair value amount of debt instrument that was repurchased.

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Amount, after accumulated amortization, of debt discount (premium).

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Debt Instrument, Convertible, Conversion Ratio, Principal Amount

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