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Stock-Based and Other Long-Term Incentive Compensation - Restricted Stock (Details) - Restricted Stock - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Number  of Shares
Outstanding, beginning of period (in shares)	258,101
Granted (in shares)	146,048
Vested (in shares)	(85,457)
Canceled/Forfeited (in shares)	(3,333)
Outstanding, beginning of period (in shares)	315,359	258,101
Weighted Average Grant Date Fair Value
Outstanding, beginning of period (in dollars per share)	$ 12.87
Granted (in dollars per share)	8.91
Vested (in dollars per share)	20.25
Canceled/Forfeited (in dollars per share)	12.26
Outstanding, end of period (in dollars per share)	$ 9.04	$ 12.87
Weighted Average Remaining Contractual Life (years)
Weighted average remaining contractual life (years)	9 years 3 months 3 days	8 years 7 months 9 days
Aggregate Intrinsic Value
Outstanding, begging balance	$ 2,447
Granted	1,301
Vested	804
Canceled/Forfeited	31
Outstanding, ending balance	$ 2,977	$ 2,447

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- Definition

Share based Compensation Arrangement by Share based Payment Award Equity Instruments Other than Options Aggregate Intrinsic Value Grants in Period

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Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Cancelled Or Forfeited In Period, Intrinsic Value

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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 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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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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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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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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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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