Share Capital (Details Textual) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Mar. 14, 2019 USD ($) $ / shares shares	Mar. 07, 2017 USD ($) $ / shares shares	Mar. 31, 2019 USD ($) vote $ / shares shares	Mar. 31, 2018 USD ($) shares	Sep. 30, 2018 vote	Dec. 31, 2018 shares	Dec. 31, 2017 shares
Share Capital [Line Items]
Issuance of common and convertible preference shares			$ 97,629
Expenses for convertible preference shares				$ (97)
Series 4 Convertible Preferred Stock
Share Capital [Line Items]
Proceeds from issuance of common and convertible preference shares, net of issuance costs			97,629	$ 0
Preferred Stock
Share Capital [Line Items]
Proceeds from issuance of common and convertible preference shares, net of issuance costs	$ 97,629
Issuance of common and convertible preference shares			$ 61,994
Shares outstanding (shares) | shares			145,000	95,000		95,000	95,000
Expenses for convertible preference shares				$ (97)
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 Percentage, Preference		8.00%
Preferred Stock, Accretion Rate, Preference Per Share | $ / shares			$ 7.70
Preferred Stock, Accretion of Redemption Discount			$ 2,194
Preferred Stock, Liquidation Preference, Value			$ 111,901
Shares outstanding (shares) | shares			95,000				95,000
Expenses for convertible preference shares		$ 90,123
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%
Stock issued during period, convertible preferred (shares) | shares		95,000
Preferred Stock | Series 6 Convertible Preferred Stock
Share Capital [Line Items]
Stock Issued During Period, Shares, Issued For Services, Convertible Preferred Shares | shares	50,000,000
Proceeds from issuance of common and convertible preference shares, net of issuance costs	$ 50,000
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%
Preferred Stock, Convertible Preference Shares, Accretion Period	5 years
Preferred Stock, Accretion of Redemption Discount			$ 189
Preferred Stock, Liquidation Preference, Value			$ 50,189
Shares outstanding (shares) | shares			50,000
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]
Issuance of common and convertible preference shares	$ 35,635		$ 35,635
Common Stock | Common Class A
Share Capital [Line Items]
Stock Issued During Period, Shares, Issued for Services | shares	14,285,714
Proceeds from Issuance of Common Stock	$ 50,000
Shares outstanding (shares) | shares			71,886,266			57,517,568
Common stock, voting rights, number of votes per share | vote			1
Common Stock | Common Class B
Share Capital [Line Items]
Shares outstanding (shares) | shares			3,755				3,755
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	$ 61,994