CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 81,149	$ 31,144
Short-term investments	0	2,522
Prepaid expenses and other current assets	1,490	1,914
Total current assets	82,639	35,580
Property and equipment, net	1,102	1,235
Other assets	4,240	9,465
Total assets	87,981	46,280
Current liabilities:
Accounts payable	905	0
Accrued expenses	6,565	11,606
Current portion of long-term debt	4,812	4,812
Other current liabilities	2,123	2,070
Total current liabilities	14,405	18,488
Long-term debt, less current portion	3,252	4,455
Other liabilities	4,295	5,407
Total liabilities	21,952	28,350
Commitments and contingencies
Stockholders' equity:
Common stock, $0.001 par value per share: Authorized shares - 131,500,000 as of March 31, 2020 and December 31, 2019, Issued and outstanding shares - 73,681,593 and 57,979,725 as of March 31, 2020 and December 31, 2019, respectively	74	58
Additional paid-in capital	2,315,810	2,299,186
Accumulated other comprehensive loss	(11,993)	(11,993)
Accumulated deficit	(2,275,749)	(2,263,563)
Total CTI stockholders' equity	28,142	23,688
Noncontrolling interest	(5,758)	(5,758)
Total stockholders' equity	22,384	17,930
Total liabilities, mezzanine equity and stockholders' equity	87,981	46,280
Series X Preferred Stock
Stockholders' equity:
Preferred stock	43,645	0
Series O Preferred Stock
Stockholders' equity:
Preferred stock	$ 0	$ 0