Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	[1]
Current assets:
Cash and cash equivalents	$ 139,533	$ 156,184
Accounts receivable	6,166	4,934
Inventory	9,054	9,502
Prepaid expenses and other current assets	5,362	4,218
Total current assets	160,115	174,838
Land, property and equipment, net	71,003	71,828
Intangibles, net	7,945	7,775
Other non-current assets	2,301	2,351
Total assets	241,364	256,792
Current liabilities:
Accounts payable and other accrued liabilities	8,190	10,127
Accrued clinical and preclinical study fees	3,349	3,286
Payable to Eisai	13,583	12,080
Current portion of deferred revenues	22,243	21,425
Current portion of lease financing obligations	3,108	2,978
Total current liabilities	50,473	49,896
Deferred rent	494	470
Deferred revenues, less current portion	88,389	87,617
Lease financing obligations, less current portion	$ 64,450	$ 65,267
Commitments and contingencies
Stockholders’ equity:
Common stock	$ 24	$ 24
Additional paid-in capital	1,433,890	1,430,917
Accumulated other comprehensive income (loss)	1,412	(1,179)
Accumulated deficit	(1,397,768)	(1,376,220)
Total stockholders’ equity	37,558	53,542
Total liabilities and stockholders’ equity	$ 241,364	$ 256,792

[1] The balance sheet data at December 31, 2015, has been derived from audited financial statements at that date. It does not include, however, all of the information and notes required by US generally accepted accounting principles for complete financial statements.