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

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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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Description of the plan, including the basis for determining contributions, the employee groups covered, and the nature and effect of significant matters affecting comparability of information for all periods presented. For leveraged ESOPs and pension reversion ESOPs, the description generally includes the basis for releasing shares and how dividends on allocated and unallocated shares are used.

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Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Stock-Based Compensation (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	May 31, 2019
Stock-Based Compensation (Details) [Line Items]
Issuance of an aggregate shares of common stock (in Shares)			500,000
Employee stock ownership plan, description			This offering period authorized employees to contribute up to 10% of their base compensation to purchase a maximum of 1,000 shares at a discounted purchase price that would be equal 85% of the lower of: (i) the closing price at the beginning of the offering period and (ii) the closing price at the end of the offering period. A total of 7,649 shares were purchased on the last day of the offering period, June 2, 2020, at a discounted price of $3.2215 per share. As of June 30, 2020, a total of 467,751shares remain available for purchase under the ESPP.
Remaining shares are purchase (in Shares)			166,959
Stock-based compensation expense	$ 1.0	$ 2.3	$ 2.0	$ 4.4
2018 Plan [Member]
Stock-Based Compensation (Details) [Line Items]
Authorized shares to be issued (in Shares)					2,550,000
Outstanding awards plan, description			(i) 2,429,011 shares subject to outstanding awards under the Prior Plans, including 1,092,633 shares subject to market-price vesting conditions, and (ii) 1,139,739 shares subject to outstanding awards under the 2018 Plan, including 100,000 shares subject to performance-based target awards and 241,077 shares subject to awards that were previously subject to performance criteria that were determined to be met in June 2020 (at a level equal to approximately 87% of the target awards) which awards continue to remain subject to a time-based vesting schedule. As of June 30, 2020, there were 1,136,945 shares available for new awards under the 2018 Plan and no shares available for new awards under the Prior Plans.
Unvested Restricted Stock [Member] \| Incentive Plan [Member]
Stock-Based Compensation (Details) [Line Items]
Unrecognized compensation expense	$ 5.9		$ 5.9
Expected to be recognized over weighted average period			1 year 255 days