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Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Assets    
Cash and cash equivalents $ 8,661 $ 28,899
Restricted cash 4,426 1,612
Investments 27,079 22,664
Receivables from collaborations 2,234 6,243
Inventory 1,949 1,612
Prepaid expenses and other current assets 1,674 2,674
Deferred collaboration expense 89 90
Total current assets 46,112 63,794
Investments 24,154 47,683
Property and equipment, net 10,112 5,149
Deferred collaboration expense 229 265
Other assets 1,610 5,468
Total assets 82,217 122,359
Liabilities and Stockholders’ Equity    
Accounts payable 5,051 9,307
Accrued expenses 11,783 16,237
Interest payable 9,203 6,746
Deferred collaboration revenue 2,134 2,163
Non-recourse notes payable 28,023 27,804
Total current liabilities 56,194 62,257
Deferred collaboration revenue 8,776 9,674
Deferred rent 297 329
Foreign currency derivative 974
Lease financing obligation 2,589 2,375
Stockholders’ equity:    
Preferred stock, $0.001 par value; shares authorized — 5,000; no shares issued and outstanding
Common stock, $0.01 par value: shares authorized — 200,000; shares issued and outstanding — 73,701 in 2016 and 73,355 in 2015 737 734
Additional paid-in capital 562,634 558,113
Accumulated other comprehensive income (loss) 46 (206)
Accumulated deficit (550,030) (510,917)
Total stockholders’ equity 13,387 47,724
Total liabilities and stockholders’ equity $ 82,217 $ 122,359