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Proceeds From Redeemable Noncontrolling Interest

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Redeemable Noncontrolling Interest, Equity, Preferred, Amount Authorized

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Redeemable Noncontrolling Interest, Equity, Preferred, Period For Triggering Event To Occur

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Redeemable Noncontrolling Interest, Equity, Preferred, Units Issued, Value

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Redeemable Noncontrolling Interest, Equity, Preferred Units, Units issued

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Redeemable Noncontrolling Interest, Project Extension Period

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Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

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The fair value as of the reporting date of noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. The noncontrolling interest holder's ownership (or holders' ownership) may be in the form of preferred shares (regardless of class), preferred partnership units (regardless of class), preferential membership interests, or any other form of preferred equity regardless of investee entity legal form.

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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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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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Partners' Capital, Mezzanine Capital and Distributions (Redeemable Noncontrolling Interest - Narrative) (Details) - USD ($)			3 Months Ended		6 Months Ended
	Aug. 14, 2020	Sep. 23, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Apr. 14, 2020	Dec. 31, 2019
Redeemable Noncontrolling Interest [Line Items]
Proceeds from redeemable noncontrolling interest					$ 122,900,000
Redeemable noncontrolling interest redemption value adjustments			$ (4,159,000)	$ 0	(8,245,000)	$ 0
PIK distributions					6,708,000
Redemption accretion of redeemable preferred noncontrolling interest					$ 1,537,000
Redeemable Noncontrolling Interest Preferred Units
Redeemable Noncontrolling Interest [Line Items]
Number of preferred units outstanding (in units)			131,750		131,750			130,000
Alkali Holdings
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest redemption value adjustments			$ 4,200,000
Subsidiary \| Alkali Holdings
Redeemable Noncontrolling Interest [Line Items]
Issuance of redeemable noncontrolling interest		$ 55,000,000
Facility expansion costs percentage		100.00%
Equity preferred units issued (in shares)							1,750
Expansion project extension period	1 year
Period for occurrence of triggering events		6 years 6 months
Redeemable noncontrolling interest redemption value adjustments			4,200,000		$ 8,200,000
PIK distributions			3,400,000		6,700,000
Redemption accretion of redeemable preferred noncontrolling interest			800,000		1,500,000
Redemption value of redeemable preferred noncontrolling interest			$ 194,700,000		$ 194,700,000
Subsidiary \| Alkali Holdings \| Redeemable Noncontrolling Interest Preferred Units
Redeemable Noncontrolling Interest [Line Items]
Number of preferred units outstanding (in units)		55,000
Subsidiary \| Alkali Holdings \| Maximum
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest preferred commitment		$ 350,000,000