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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The weighted average fair value at grant date for nonvested equity-based awards issued 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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
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-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Stock-Based Compensation - Restricted Stock Unit Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Jun. 01, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Number of Units
Outstanding, Ending Balance		791,853	648,450	791,853	648,450
Employees [Member] \| Restricted Stock Units [Member] \| General and Administrative [Member]
Number of Units
Compensation expense		$ 310	$ 517	$ 639	$ 1,969
2014 Equity Incentive Plan [Member] \| Non-employee Directors [Member] \| June 2023 \| Restricted Stock Units [Member]
Number of Units
Awarded	194,172
Outstanding, Ending Balance		194,172		194,172
Weighted Average Grant Date Fair Value
Weighted-average grant date fair value, awarded	$ 3.09
2014 Equity Incentive Plan [Member] \| Non-employee Directors [Member] \| June 2023 \| Restricted Stock Units [Member] \| General and Administrative [Member]
Number of Units
Compensation expense		$ 49		$ 49
2014 Equity Incentive Plan [Member] \| Employees And Non-Employee Members Of Board Of Directors [Member] \| Restricted Stock Units [Member]
Number of Units
Outstanding, Beginning Balance				372,513
Awarded				601,172
Vested and released				(178,247)
Forfeited				(3,585)
Outstanding, Ending Balance		791,853		791,853
Weighted Average Grant Date Fair Value
Weighted-average grant date fair value, outstanding, Beginning Balance				$ 13.20
Weighted-average grant date fair value, awarded				7.81
Weighted-average grant date fair value, vested and released				12.15
Weighted-average grant date fair value, forfeited				10.46
Weighted-average grant date fair value, outstanding, Ending Balance		$ 9.36		$ 9.36
2014 Equity Incentive Plan [Member] \| Employees [Member] \| Time-based Restricted Stock Units [Member] \| General and Administrative [Member]
Number of Units
Compensation expense			$ 131