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Share Capital (Details Textual) |  |  | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 14, 2019 USD ($) $ / shares shares | Mar. 07, 2017 USD ($) $ / shares | Jun. 30, 2019 USD ($) shares | Jun. 30, 2020 USD ($) vote $ / shares shares | Jun. 30, 2019 USD ($) shares | Mar. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Mar. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  |  | $ (182,600,000) | $ (184,603,000) | $ (182,600,000) | $ (183,943,000) | $ (190,575,000) | $ (184,896,000) | $ (257,590,000)
Issuance of common and convertible preference shares |  |  | 991,000 |  | 98,620,000 |  |  |  |
Series 4 Convertible Preferred Stock |  |  |  |  |  |  |  |  |
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from issuance of common and convertible preference shares, net of issuance costs |  |  |  | 0 | 98,620,000 |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from issuance of common and convertible preference shares, net of issuance costs | $ 98,620,000 |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | $ 90,123,000 | 152,746,000 | 152,746,000 | 152,746,000 | $ 152,746,000 | $ 152,746,000 | $ 152,117,000 | $ 90,123,000
Issuance of common and convertible preference shares |  |  | $ 629,000 |  | $ 62,623,000 |  |  |  |
Preferred Stock | Series 4 Convertible Preferred Stock |  |  |  |  |  |  |  |  |
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from issuance of common and convertible preference shares, net of issuance costs |  | $ 95,000 |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share | $ / shares |  | $ 1,000 |  |  |  |  |  |  |
Preferred Stock, Conversion Price Per Preference Share | $ / shares | $ 7.42 | $ 10.00 |  |  |  |  |  |  |
Preferred Stock, Accretion of Redemption Discount |  |  |  | 4,797 |  |  |  |  |
Preferred Stock, Liquidation Preference, Value |  |  |  | $ 123,548 |  |  |  |  |
Shares outstanding (shares) | shares |  |  | 145,000,000 | 145,000,000 | 145,000,000 | 145,000,000 | 145,000,000 | 145,000,000 | 95,000,000
Preferred Stock, Conversion Basis, Common Stock Class A Closing Trade Price |  | 125.00% |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Percentage Rate, Change of Control of the Company |  | 7.00% |  |  |  |  |  |  |
Preferred Stock | Series 6 Convertible Preferred Stock |  |  |  |  |  |  |  |  |
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued For Services, Convertible Preferred Shares | shares | 50,000 |  |  |  |  |  |  |  |
Proceeds from issuance of common and convertible preference shares, net of issuance costs | $ 50,000,000 |  |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share | $ / shares | $ 1,000 |  |  |  |  |  |  |  |
Preferred Stock, Conversion Price Per Preference Share | $ / shares | $ 5.00 |  |  |  |  |  |  |  |
Preferred Stock, Accretion Percentage, Preference | 8.00% | 8.00% |  |  |  |  |  |  |
Preferred Stock, Accretion Rate, Preference Per Share | $ / shares |  |  |  | $ 8.50 |  |  |  |  |
Preferred Stock, Convertible Preference Shares, Accretion Period | 5 years |  |  |  |  |  |  |  |
Preferred Stock, Monthly Accretion of Redemption Discount |  |  |  | $ 7.24 |  |  |  |  |
Preferred Stock, Accretion of Redemption Discount |  |  |  | 2,152 |  |  |  |  |
Preferred Stock, Liquidation Preference, Value |  |  |  | 55,413 |  |  |  |  |
Preferred Stock, Convertible Preference Shares, Convertible at Company's Option, Term | 2 years |  |  |  |  |  |  |  |
Preferred Stock, Conversion Basis, Common Stock Class A Closing Trade Price | 125.00% |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage | 7.00% |  |  |  |  |  |  |  |
Additional Paid-in Capital |  |  |  |  |  |  |  |  |
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  |  | $ 97,455,000 | $ 98,234,000 | $ 97,455,000 | $ 99,587,000 | $ 101,469,000 | $ 98,693,000 | $ 58,579,000
Issuance of common and convertible preference shares | $ 35,997 |  | $ 362,000 |  | $ 35,997,000 |  |  |  |
Common Stock | Common Class A |  |  |  |  |  |  |  |  |
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock | 50,000,000 |  |  |  |  |  |  |  |
Shares outstanding (shares) | shares |  |  |  | 72,583,647 |  |  | 72,150,854 |  |
Common stock, voting rights, number of votes per share | vote |  |  |  | 1 |  |  |  |  |
Common Stock | Common Class B |  |  |  |  |  |  |  |  |
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Shares outstanding (shares) | shares |  |  |  | 3,743 |  |  | 3,749 |  |
Common stock, voting rights, number of votes per share | vote |  |  |  | 20 |  |  |  |  |
Contingent Consideration, Liability Settlements [Domain] | Preferred Stock | Series 4 Convertible Preferred Stock |  |  |  |  |  |  |  |  |
Share Capital [Line Items] |  |  |  |  |  |  |  |  |
Issuance of common and convertible preference shares | $ 62,623 |  |  |  |  |  |  |  |

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