CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 36,439	$ 27,218
Restricted cash	0	16,000
Short-term investments	30,599	0
Receivables from license and development services arrangements	13,679	1,278
Prepaid expenses and other current assets	1,775	2,428
Total current assets	82,492	46,924
Property and equipment, net	1,793	2,365
Other assets	5,547	5,597
Total assets	89,832	54,886
Current liabilities:
Accounts payable	4,498	2,588
Accrued expenses	12,852	13,890
Current portion of deferred revenue	0	912
Current portion of long-term debt	4,812	444
Other current liabilities	893	1,424
Total current liabilities	23,055	19,258
Deferred revenue, less current portion	0	494
Long-term debt, less current portion	9,267	13,575
Other liabilities	4,571	5,469
Total liabilities	36,893	38,796
Commitments and contingencies (Note 18)
Stockholders' equity:
Common stock, $0.001 par value per share: Authorized shares - 101,500,000 and 81,500,000 as of December 31, 2018 and 2017, respectively, Issued and outstanding shares - 57,986,075 and 42,969,494 as of December 31, 2018 and 2017, respectively	58	43
Additional paid-in capital	2,294,025	2,223,388
Accumulated other comprehensive loss	(10,643)	(6,272)
Accumulated deficit	(2,224,746)	(2,195,346)
Total CTI stockholders' equity	58,694	21,813
Noncontrolling interest	(5,755)	(5,723)
Total stockholders' equity	52,939	16,090
Total liabilities and stockholders' equity	89,832	54,886
Preferred stock, $0.001 par value per share: Authorized shares - 33,333, Series O Preferred Stock, 12,575 shares and 0 shares issued and outstanding as of December 31, 2018 and 2017, respectively (Aggregate liquidation preference of $25,150 and $0 as of December 31, 2018 and 2017, respectively)
Stockholders' equity:
Preferred stock, Series O and N, $0.001 par value per share	0	0
Preferred stock, $0.001 par value per share: Authorized shares - 33,333, Series N Preferred Stock, 0 shares and 575 shares issued and outstanding as of December 31, 2018 and 2017, respectively (Aggregate liquidation preference of $0 and $1,150 as of December 31, 2018 and 2017, respectively)
Stockholders' equity:
Preferred stock, Series O and N, $0.001 par value per share	$ 0	$ 0