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

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Aggregate number of common shares reserved for future issuance.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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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 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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Stock-based Compensation (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
Stock-based Compensation (Details) - USD ($) $ in Thousands	Jan. 04, 2017	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 107	$ 56	$ 108
Nonvested awards, unrecognized stock-based compensation expense		$ 434
Expected term for cost to be recognized (in years)		3 years
Incentive compensation plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					1,630,000
Nonvested awards, unrecognized stock-based compensation expense		$ 10
Performance share award agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards (in shares)	161,766
Unvested awards (in shares)		129,000