Deferred Compensation Plan (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferral of compensation percentage maximum	100.00%		100.00%
Change in fair value
Unrealized gain (loss)	$ 757	$ (1,247)	$ 3,002	$ 1,191
Distributions
Distribution from deferred compensation plan	$ 2	$ 20	$ 8	$ 93
Deferred compensation plan distribution (in shares)	0	1	1	3
Deferred compensation plan liability	$ 1,156		$ 1,156		$ 4,729
Deferred compensation plan
Change in fair value
Unrealized gain (loss)	$ 869	$ 1,526	$ 3,566	$ 5,603

Deferral Of Compensation Percentage Maximum

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- Definition

The total fair value of shares issued during the period under a deferred compensation 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
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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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- Definition

Number of shares issued pursuant to the terms of a deferred compensation arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- References

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

+ References

No definition available.

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- References

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- Definition

Amount of unrealized gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3) and still held.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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