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