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Share-Based Compensation - Schedule of Cash Payments and Compensation Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Employee Phantom Stock Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash payments for settled unmodified liability phantom shares	$ 2,988	$ 2,360	$ 3,066
Director Phantom Stock Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash payments for settled unmodified liability phantom shares	$ 964	$ 198	$ 474

X

- Definition

Amount of cash paid to settle liability for award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

+ Details

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X

- 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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- Details

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- Details

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