Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 20,933	$ 25,028
Restricted cash	25	25
Prepaid expenses and other current assets	634	1,297
Total current assets	21,592	26,350
Property and equipment, net	2,026	2,101
Ownership interests in and advances	66,798	77,129
Other assets	1,992	1,997
Total Assets	92,408	107,577
Current Liabilities:
Accounts payable	141	39
Accrued compensation and benefits	2,096	1,364
Accrued expenses and other current liabilities	568	627
Lease liability - current	380	399
Total current liabilities	3,185	2,429
Lease liability - non-current	2,303	2,380
Other long-term liabilities	1,112	1,027
Total Liabilities	6,600	5,836
Commitments and contingencies (Note 9)
Equity:
Preferred stock, $0.10 par value; 1,000 shares authorized
Common stock, $0.10 par value; 83,333 shares authorized; 21,573 shares issued at March 31, 2020 and December 31, 2019	2,157	2,157
Additional paid-in capital	810,827	810,856
Treasury stock, at cost; 924 and 930 shares at March 31, 2020 and December 31, 2019, respectively	(13,920)	(14,024)
Accumulated deficit	(713,231)	(697,223)
Accumulated other comprehensive loss	(25)	(25)
Total Equity	85,808	101,741
Total Liabilities and Equity	$ 92,408	$ 107,577