Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited)

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CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
 [1]
Current assets:    
Cash $ 48,436 $ 45,780
Trade and other receivables 2,755 1,468
Prepaid expenses and other current assets 268 378
Total current assets 51,459 47,626
Property and equipment, net 53 59
Operating lease right-of-use assets 6,906  
Long-term royalty receivables 15,375 15,000
Long-term equity securities 1,107 392
Other assets 834 708
Total assets 75,734 63,785
Current liabilities:    
Accounts payable 987 1,244
Accrued and other liabilities 798 2,382
Operating lease liabilities 2,242  
Unearned revenue recognized under units-of-revenue method 595 490
Contract liabilities 798 798
Current portion of long-term debt 1,729 789
Total current liabilities 7,149 5,703
Unearned revenue recognized under units-of-revenue method – long-term 16,807 17,017
Long-term debt 20,854 21,690
Long-term operating lease liabilities 6,406  
Other liabilities – long-term 489 590
Total liabilities 51,705 45,000
Commitments and Contingencies (Note 11)
Stockholders’ equity:    
Convertible preferred stock, $0.05 par value, 1,000,000 shares authorized, 6,256 shares issued and outstanding at March 31, 2019 and December 31, 2018
Common stock, $0.0075 par value, 277,333,332 shares authorized, 8,724,320 and 8,690,723 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively 65 65
Additional paid-in capital 1,213,133 1,211,122
Accumulated deficit (1,189,169) (1,192,402)
Total stockholders’ equity 24,029 18,785
Total liabilities and stockholders’ equity $ 75,734 $ 63,785
[1] The condensed consolidated balance sheet as of December 31, 2018 has been derived from the audited consolidated financial statements as of that date included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.