Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net loss from continuing operations	$ (9,079,399)	$ (30,448,405)
Adjustments to reconcile net loss from continuing operations to net cash used in operating activities:
Depreciation and amortization	29,423	106,989
Loss on retirement of equipment and furnishings		424,049
Gain on warrant liabilities	(527,025)	(1,367,777)
Loss on goodwill impairment	183,780
Amortization of loan cost and discount	1,157,817	1,923,816
Stock-based compensation expense	1,621,266	3,111,505
Changes in assets and liabilities:
Receivable	7,356,229	(7,382,263)
Prepaid expenses and other current assets	1,000,915	1,546,139
Accounts payable	(2,831,236)	(2,224,476)
Other assets	(17,709)
Deferred revenue		6,924,353
Accrued expenses and other current liabilities	(7,377,978)	3,941,794
Net cash used in operating activities from continuing operations	(8,843,917)	(23,444,276)
Net cash used in operating activities from discontinued operations	(2,383,562)	(3,656,921)
Net cash used in operating activities	(10,867,479)	(27,101,197)
Cash flows from investing activities:
Purchases of equipment and furnishings	(11,478)	(134,598)
Net cash used in investing activities	(11,478)	(134,598)
Cash flows from financing activities:
Proceeds from common stock issued in public offering, net of fees	6,512,151	13,951,218
Proceeds from sale of common shares and warrants related to NantCell		6,075,647
Loan amendment fee payable		(200,000)
Term loan principal repayment	(9,986,362)	(15,013,638)
Loan end fee payment	(1,771,250)
Net proceeds from exercise of stock options and warrants		3,202,858
Net cash provided by (used in) financing activities	(5,245,461)	8,016,085
Net decrease in cash and cash equivalents	(16,124,418)	(19,219,710)
Cash and cash equivalents at beginning of year	37,497,691	56,717,401
Cash and cash equivalents at end of year	21,373,273	37,497,691
Supplemental disclosures of non-cash financing/investing activities:
Warrant liability exercises		1,894,589
Warrants repriced in connection with the sale of licenses		76,549
Receivable from issuance of restricted stock		388
Equipment and furnishings purchased but not paid		1,988
1 - 6 reverse stock split		12
Series B Preferred stock conversion		1,233
Supplemental disclosure of Cash Flow Information:
Cash paid during the year for income taxes	800	800
Cash paid during the year for interest	$ 647,308	$ 2,025,468