CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 70,110	$ 31,144
Short-term investments	0	2,522
Prepaid expenses and other current assets	1,417	1,914
Total current assets	71,527	35,580
Property and equipment, net	969	1,235
Other assets	3,916	9,465
Total assets	76,412	46,280
Current liabilities:
Accounts payable	658	0
Accrued expenses	6,096	11,606
Current portion of long-term debt	4,812	4,812
Other current liabilities	2,179	2,070
Total current liabilities	13,745	18,488
Long-term debt, less current portion	2,049	4,455
Other liabilities	3,755	5,407
Total liabilities	19,549	28,350
Commitments and contingencies
Stockholders' equity:
Common stock, $0.001 par value per share:	74	58
Additional paid-in capital	2,358,531	2,299,186
Accumulated deficit	(2,301,742)	(2,275,556)
Total CTI stockholders' equity	56,863	23,688
Noncontrolling interest	0	(5,758)
Total stockholders' equity	56,863	17,930
Total liabilities and stockholders' equity	76,412	46,280
Series O Preferred Stock
Stockholders' equity:
Preferred stock, $0.001 par value per share:	0	0
Series X Preferred Stock
Stockholders' equity:
Preferred stock, $0.001 par value per share:	$ 0	$ 0