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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
ASSETS    
Cash and cash equivalents $ 26,731 $ 50,282
Restricted cash 1,544 3,286
Investments 77,736 64,115
Receivables from collaborations 4,293 6,117
Inventory 1,649
Prepaid expenses and other current assets 2,390 1,381
Deferred collaboration expense 9 210
Total current assets 114,352 125,391
Investments 22,376 41,295
Property and equipment, net 9,135 9,546
Other assets 978 2,027
Total assets 146,841 178,259
LIABILITIES AND STOCKHOLDERS’ EQUITY    
Accounts payable 7,769 6,337
Accrued expenses 15,891 12,699
Interest payable 11,848 12,095
Deferred collaboration revenue 221 8,484
Lease financing obligation 47 75
Senior credit facility 4,580 6,464
Non-recourse notes payable 29,121 28,682
Total current liabilities 69,477 74,836
Deferred rent 54 155
Lease financing obligation 2,703 2,751
Senior credit facility 25,372 16,750
Stockholders’ equity:    
Preferred stock, $0.001 par value; shares authorized — 5,000; no shares outstanding
Common stock, $0.01 par value; shares authorized — 200,000; shares issued and outstanding — 110,063 at December 31, 2018 and 98,411 at December 31, 2017 1,101 984
Additional paid-in capital 780,400 714,869
Accumulated other comprehensive loss (297) (243)
Accumulated deficit (731,969) (631,843)
Total stockholders’ equity 49,235 83,767
Total liabilities and stockholders’ equity $ 146,841 $ 178,259