Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	[1]	$ 210,704	$ 186,488
Short-term investments	[1]	210,275	257,713
Restricted cash (Development Partner)	[1]	262	341
Receivables from collaborators	[1]	7,500	1,000
Prepaid research and development	[1]	10,854	16,976
Prepaid expenses and other current assets	[1]	3,295	3,059
Total current assets	[1]	442,890	465,577
Property and equipment, net	[1]	6,779	6,243
Intangible asset	[1]	3,151	3,151
Long-term investments	[1]		15,960
Prepaid and other long-term assets	[1]	11,177	11,993
Total assets	[1]	463,997	502,924
Current liabilities:
Accounts payable	[1]	13,281	10,279
Accrued compensation and employee benefits	[1]	2,709	5,459
Accrued research and development	[1]	17,574	24,195
Accrued and other liabilities	[1]	2,725	2,826
Deferred revenue, current portion	[1]	16,938	8,387
Total current liabilities	[1]	53,227	51,146
Deferred revenue, long-term	[1]	34,570	18,629
Other long-term liabilities	[1]	2,660	2,826
Total liabilities	[1]	$ 90,457	$ 72,601
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized; no shares issued and outstanding	[1]
Common stock, $0.001 par value, 100,000,000 shares authorized at March 31, 2016 and December 31, 2015; 56,469,789 and 56,359,515 shares issued and outstanding at March 31, 2016 and December 31, 2015, respectively	[1]	$ 57	$ 57
Additional paid-in capital	[1]	1,084,766	1,076,791
Accumulated deficit	[1]	(714,276)	(649,302)
Accumulated other comprehensive income/(loss)	[1]	66	(150)
Total stockholders’ equity	[1]	370,613	427,396
Noncontrolling interest (Development Partner)	[1]	2,927	2,927
Total stockholders' equity	[1]	373,540	430,323
Total liabilities and stockholders’ equity	[1]	$ 463,997	$ 502,924

[1] Amounts include the assets and liabilities of our Development Partner a consolidated variable interest entity (“VIE”). Portola's interests and obligations with respect to the VIE's assets and liabilities are limited to those accorded to Portola in its agreement with the VIE. See Note 7, “Asset Acquisition and License Agreements,” to these condensed consolidated financial statements.