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Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Current Assets:    
Cash and cash equivalents $ 17,510 $ 24,739
Restricted cash 25 25
Ownership interests 2,407 4,549
Prepaid expenses and other current assets 1,126 965
Total current assets 21,068 30,278
Right-of-use asset, net 1,431 1,561
Ownership interests and advances 23,192 21,972
Other assets 267 217
Total Assets 45,958 54,028
Current Liabilities:    
Accounts payable 56 41
Accrued compensation and benefits 167 794
Accrued expenses and other current liabilities 518 524
Lease liability - current 401 375
Total current liabilities 1,142 1,734
Lease liability - non-current 1,471 1,678
Other long-term liabilities 50 50
Total Liabilities 2,663 3,462
Commitments and contingencies (Note 9)
Equity:    
Preferred stock, $0.10 par value; 1,000 shares authorized 0 0
Common stock, $0.10 par value; 83,333 shares authorized; 21,573 shares issued and outstanding at June 30, 2022 and December 31, 2021 2,157 2,157
Additional paid-in capital 805,441 806,638
Treasury stock, at cost; 5,261 and 5,068 shares at June 30, 2022 and December 31, 2021, respectively (48,417) (48,569)
Accumulated deficit (715,861) (709,635)
Accumulated other comprehensive loss (25) (25)
Total Equity 43,295 50,566
Total Liabilities and Equity $ 45,958 $ 54,028