Equity-Based Compensation - Restricted stock (Details) - Restricted common stock $ / shares in Units, $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($) $ / shares shares
Number of unvested awards
Outstanding, beginning (in shares) \| shares	302,360
Vested (in shares) \| shares	(133,704)
Forfeited (in shares) \| shares	(42,010)
Outstanding, end (in shares) \| shares	126,646
Weighted Average Fair Value
Outstanding, beginning (in dollars per share) \| $ / shares	$ 5.77
Vested (in dollars per share) \| $ / shares	5.77
Forfeited (in dollars per share) \| $ / shares	5.77
Outstanding, end (in dollars per share) \| $ / shares	$ 5.77
Unrecognized equity based compensation expense \| $	$ 0.6
Period for recognition	1 year

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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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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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 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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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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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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