CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 72,945	$ 7,703
Restricted cash	525	500
Marketable securities	24,979	37,955
Prepaid expenses and other current assets	3,117	2,669
Total current assets	101,566	48,827
Property and equipment, net	2,245	808
Ownership interests in and advances to partner companies	76,750	95,585
Other assets	709	517
Total Assets	181,270	145,737
Current Liabilities:
Accounts payable	143	165
Accrued compensation and benefits	1,926	3,433
Accrued expenses and other current liabilities	1,941	2,182
Credit facility - current	43,064	22,100
Credit facility repayment feature	4,100	5,060
Lease liability - current	383
Total current liabilities	51,557	32,940
Credit facility - non-current	0	43,014
Lease liability - non-current	2,582
Other long-term liabilities	1,915	2,804
Total Liabilities	56,054	78,758
Commitments and contingencies (Note 10)
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 at June 30, 2019 and December 31, 2018	2,157	2,157
Additional paid-in capital	810,401	810,928
Treasury stock, at cost; 921 and 914 shares at June 30, 2019 and December 31, 2018, respectively	(13,968)	(15,001)
Accumulated deficit	(673,349)	(731,105)
Accumulated other comprehensive loss	(25)	0
Total Equity	125,216	66,979
Total Liabilities and Equity	$ 181,270	$ 145,737