CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 31,144	$ 36,439
Short-term investments	2,522	30,599
Receivables from license and development services arrangements	0	13,679
Prepaid expenses and other current assets	1,914	1,775
Total current assets	35,580	82,492
Property and equipment, net	1,235	1,793
Other assets	9,465	5,547
Total assets	46,280	89,832
Current liabilities:
Accounts payable	0	4,498
Accrued expenses	11,606	12,852
Current portion of long-term debt	4,812	4,812
Other current liabilities	2,070	893
Total current liabilities	18,488	23,055
Long-term debt, less current portion	4,455	9,267
Other liabilities	5,407	4,571
Total liabilities	28,350	36,893
Commitments and contingencies (Note 18)
Stockholders' equity:
Common stock, $0.001 par value per share: Authorized shares - 131,500,000 and 101,500,000 as of December 31, 2019 and 2018, respectively, Issued and outstanding shares - 57,979,725 and 57,986,075 as of December 31, 2019 and 2018, respectively	58	58
Additional paid-in capital	2,299,186	2,294,025
Accumulated other comprehensive loss	(11,993)	(10,643)
Accumulated deficit	(2,263,563)	(2,224,746)
Total CTI stockholders' equity	23,688	58,694
Noncontrolling interest	(5,758)	(5,755)
Total stockholders' equity	17,930	52,939
Total liabilities and stockholders' equity	46,280	89,832
Preferred stock, $0.001 par value per share: Authorized shares - 33,333, Series O Preferred Stock, 12,575 shares issued and outstanding as of December 31, 2019 and 2018 (Aggregate liquidation preference of $25,150 as of December 31, 2019 and 2018, respectively)
Stockholders' equity:
Preferred stock, Series O and N, $0.001 par value per share	$ 0	$ 0