Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 157,480	$ 227,323
Marketable securities	46,508	248
Accounts receivable, net of allowance for doubtful accounts of $67 and $71, respectively	29,873	32,260
Other receivables	3,698	2,133
Inventories	3,550	5,715
Prepaid expenses and other assets	9,579	10,067
Total current assets	250,688	277,746
Property and equipment, net of accumulated depreciation	385	589
Intangible assets, net of accumulated amortization	111,594	137,159
Goodwill	18,061	18,162
Other assets	10,158	53,783
Total assets	390,886	487,439
Current liabilities:
Accounts payable and other accrued liabilities	69,460	58,117
Accrued payroll and benefits	9,853	9,261
Contract liabilities	4,850
Deferred revenue	0	3,872
FOLOTYN development liability	2,311	275
Convertible senior notes	0	38,224
Total current liabilities	86,474	109,749
FOLOTYN development liability, less current portion	9,686	12,111
Deferred revenue, less current portion	0	315
Acquisition-related contingent obligations	4,345	6,272
Deferred tax liabilities	1,469	1,438
Other long-term liabilities	5,650	6,215
Total liabilities	107,624	136,100
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value; 300,000,000 shares authorized; 110,525,141 and 100,742,735 issued and outstanding at December 31, 2018 and 2017, respectively	110	100
Additional paid-in capital	886,740	837,347
Accumulated other comprehensive (loss) income	(3,702)	15,999
Accumulated deficit	(599,886)	(502,107)
Total stockholders’ equity	283,262	351,339
Total liabilities and stockholders’ equity	$ 390,886	$ 487,439