Payout range maximum.

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Payout range minimum.

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- Definition

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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Number of shares issued under share-based payment arrangement.

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Stock-Based Compensation - Narrative (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020 USD ($) award	Jun. 30, 2020 USD ($) shares	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) award shares	Sep. 30, 2019 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $	$ 1,533		$ 67	$ 4,717	$ 6,715
Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)		34,059
Stock-based compensation expense \| $		$ 1,100
RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)				71,421
Vesting period				3 years
Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)				30,447
Types of performance-based RSUs \| award	2			2
Ultimate payout, minimum (as a percent)				0.00%
Ultimate payout, maximum (as a percent)				200.00%
Market-based RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)				71,038