Related Party Transactions (Details) - USD ($)					3 Months Ended
	Feb. 20, 2019	Feb. 15, 2019	Nov. 13, 2018	Nov. 06, 2018	Mar. 31, 2019	Feb. 20, 2019	Mar. 31, 2018
RW Services Pte Ltd [Member] | RWS License Agreement [Member]
Related Party Transaction
Related Party Transaction, Expenses from Transactions with Related Party					$ 500,000		$ 200,000
Kien Huat Realty III Limited [Member] | Series F Preferred Stock | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Share Purchase Agreement, Maximum Purchase Amount				$ 126,000,000
Proceeds from related party equity contribution				$ 29,000,000
Funding Fee, Percent				1.00%
Preferred Stock, Shares Issued	200		120			200
Proceeds from Issuance of Preferred Stock and Preference Stock, Gross			$ 12,000,000			$ 20,000,000
Proceeds from Issuance of Preferred Stock and Preference Stock			11,900,000			19,800,000
Kien Huat Realty Limited [Member] | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Issuance of Preferred Stock and Preference Stock, Funding Fee	$ 200,000		$ 100,000			$ 200,000
Kien Huat Realty Limited [Member] | Series F Preferred Stock | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Preferred Stock, Shares Issued	200					200
Proceeds from Issuance of Preferred Stock and Preference Stock, Gross	$ 20,000,000
Issuance of Preferred Stock and Preference Stock, Funding Fee	200,000					$ 200,000
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 19,800,000
Moelis & Company LLC [Member] | 2019 Moelis Letter Agreement [Member]
Related Party Transaction
Professional and Contract Services Expense		$ 350,000
Share Purchase Program Schedule, Period One [Member] | Kien Huat Realty III Limited [Member] | Series F Preferred Stock | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Share Purchase Agreement, Maximum Purchase Amount				$ 12,000,000
Share Purchase Program Schedule, Period Two [Member] | Kien Huat Realty III Limited [Member] | Series F Preferred Stock | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Share Purchase Agreement, Maximum Purchase Amount				20,000,000
Share Purchase Program Schedule, Period Three [Member] | Kien Huat Realty III Limited [Member] | Series F Preferred Stock | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Share Purchase Agreement, Maximum Purchase Amount				20,000,000
Share Purchase Program Schedule, Period Four [Member] | Kien Huat Realty III Limited [Member] | Series F Preferred Stock | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Share Purchase Agreement, Maximum Purchase Amount				15,000,000
Share Purchase Program Schedule, Period Five [Member] | Kien Huat Realty III Limited [Member] | Series F Preferred Stock | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Share Purchase Agreement, Maximum Purchase Amount				37,000,000
Share Purchase Program Schedule, Period Six [Member] | Kien Huat Realty III Limited [Member] | Series F Preferred Stock | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Related Party Transaction
Share Purchase Agreement, Maximum Purchase Amount				$ 22,000,000