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Net Loss Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Voting Common Stock |  |
Basic net loss per share: |  |
Allocation of undistributed losses attributable to common stockholders | $ (17,693) |
Weighted average number of shares used in basic per share computation | 4,345,530 |
Net loss per share, basic | $ (4.07) |
Diluted net loss per share: |  |
Allocation of undistributed losses for basic computation | $ (17,693) |
Reallocation of undistributed losses as a result of conversion of non-voting to voting common shares | (4,576) |
Allocation of undistributed losses | $ (22,269) |
Weighted average number of shares used in basic per share computation | 4,345,530 |
Add: Conversion of non-voting to voting common shares outstanding | 1,123,861 |
Weighted average number of shares used in diluted per share computation | 5,469,391 |
Net loss per share, diluted | $ (4.07) |
Basic and diluted net loss per share: |  |
Net loss per share, diluted | $ (4.07) |
Non-voting Common Stock |  |
Basic net loss per share: |  |
Allocation of undistributed losses attributable to common stockholders | $ (4,576) |
Weighted average number of shares used in basic per share computation | 1,123,861 |
Net loss per share, basic | $ (4.07) |
Diluted net loss per share: |  |
Allocation of undistributed losses for basic computation | $ (4,576) |
Allocation of undistributed losses | $ (4,576) |
Weighted average number of shares used in basic per share computation | 1,123,861 |
Weighted average number of shares used in diluted per share computation | 1,123,861 |
Net loss per share, diluted | $ (4.07) |
Basic and diluted net loss per share: |  |
Net loss per share, diluted | $ (4.07) |
Common Stock |  |
Diluted net loss per share: |  |
Net loss per share, diluted |  | $ (6.87)
Basic and diluted net loss per share: |  |
Net loss attributable to common stockholders |  | $ (12,202)
Weighted average number of shares used in basic and diluted per share computation |  | 1,775,468
Net loss per share, diluted |  | $ (6.87)

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