Subsequent Events (Details) - USD ($)	Oct. 28, 2019	Sep. 23, 2019	Aug. 26, 2019	Jun. 17, 2019	May 15, 2019	Feb. 20, 2019	Sep. 30, 2019	Dec. 31, 2018	Nov. 13, 2018
Series F
Subsequent Event [Line Items]
Preferred Stock, Shares Issued							965	120
Kien Huat Realty Limited [Member] | 2018 Kien Huat Preferred Stock Commitment Letter [Member]
Subsequent Event [Line Items]
Issuance of Preferred Stock and Preference Stock, Funding Fee						$ 200,000			$ 100,000
Kien Huat Realty Limited [Member] | 2018 Kien Huat Preferred Stock Commitment Letter [Member] | Series F
Subsequent Event [Line Items]
Preferred Stock, Shares Issued		75	150	150	270	200
Proceeds from Issuance of Preferred Stock and Preference Stock, Gross		$ 7,500,000	$ 15,000,000	$ 15,000,000	$ 27,000,000	$ 20,000,000
Issuance of Preferred Stock and Preference Stock, Funding Fee		75,000	150,000	150,000	270,000	200,000
Proceeds from Issuance of Preferred Stock and Preference Stock		$ 7,400,000	$ 14,800,000	$ 14,800,000	$ 26,700,000	$ 19,800,000
Kien Huat Realty Limited [Member] | 2018 Kien Huat Preferred Stock Commitment Letter [Member] | Series F | Subsequent Event [Member]
Subsequent Event [Line Items]
Preferred Stock, Shares Issued	75
Proceeds from Issuance of Preferred Stock and Preference Stock, Gross	$ 7,500,000
Issuance of Preferred Stock and Preference Stock, Funding Fee	75,000
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 7,400,000