CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 61,595	$ 128,182
Accounts receivable	620	282
Receivables from collaborative arrangements, net	1,329	0
Inventory, net	2,600	2,845
Prepaid expenses and other current assets	1,771	3,666
Total current assets	67,915	134,975
Property and equipment, net	3,220	3,718
Other assets	5,351	5,504
Total assets	76,486	144,197
Current liabilities:
Accounts payable	13,662	10,584
Accrued expenses	22,832	22,133
Current portion of deferred revenue	224	578
Current portion of long-term debt	7,717	37,371
Other current liabilities	1,864	1,743
Total current liabilities	46,299	72,409
Deferred revenue, less current portion	540	1,110
Long-term debt, less current portion	13,378	19,124
Other liabilities	3,752	4,141
Total liabilities	63,969	96,784
Commitments and contingencies
Shareholders' equity:
Common stock, no par value: Authorized shares - 415,000,000 and 315,000,000, Issued and outstanding shares - 282,508,329 and 280,461,097 at September 30, 2016 and December 31, 2015, respectively	2,168,237	2,157,300
Accumulated other comprehensive loss	(6,392)	(6,952)
Accumulated deficit	(2,143,954)	(2,098,317)
Total CTI shareholders' equity	17,891	52,031
Noncontrolling interest	(5,374)	(4,618)
Total shareholders' equity	12,517	47,413
Total liabilities and shareholders' equity	$ 76,486	$ 144,197