Basis of Presentation (Details Textual) - USD ($)	1 Months Ended		9 Months Ended		12 Months Ended
	Nov. 30, 2017	Oct. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Description of Business and Basis of Presentation [Line Items]
Retained Earnings (Accumulated Deficit)			$ (447,654,114)		$ (441,931,827)
Percentage Of Ownership Interest In Non Stock Subsidiary			100.00%
Proceeds from Issuance of Common Stock			$ 0	$ 17,254,341
Investors [Member]
Description of Business and Basis of Presentation [Line Items]
Proceeds from Issuance of Common Stock					$ 28,100,000
Subsequent Event [Member] | Securities Purchase Agreements [Member]
Description of Business and Basis of Presentation [Line Items]
Maximum Stock To Be Issued		$ 23,855,595
Subsequent Event [Member] | Initial and Second Closing [Member]
Description of Business and Basis of Presentation [Line Items]
Proceeds from Issuance of Common Stock		$ 14,600,000
Scenario, Forecast [Member] | Final Closing [Member]
Description of Business and Basis of Presentation [Line Items]
Proceeds from Issuance of Common Stock	$ 9,200,000
CASI China [Member]
Description of Business and Basis of Presentation [Line Items]
Cash			$ 3,800,000