Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 2,826	$ 3,235
Marketable securities, current	17,500	28,410
Other current assets	1,119	966
Current assets of discontinued operations	1,843	5,565
Total current assets	23,288	38,176
Non-Current Assets
Marketable securities, non-current	1,397	14,647
Property and equipment, net of accumulated depreciation	358	504
Other assets	481	611
Noncurrent assets of discontinued operations	6,415	7,273
Total non-current assets	8,651	23,035
Total assets	31,939	61,211
Current Liabilities
Accounts payable and accrued expenses	1,453	2,314
Other current liabilities	0	628
Current liabilities of discontinued operations	2,470	3,263
Total current liabilities	3,923	6,205
Non-Current Liabilities
Senior notes	88,385	85,937
Other liabilities	391	494
Non-current liabilities of discontinued operations	1,833	1,925
Total non-current liabilities	90,609	88,356
Total liabilities	$ 94,532	$ 94,561
Commitments and contingencies (Note 7)
Capital stock, $0.01 par value per share, 120,000,000 shares authorized:
Common stock, 92,748,753 shares issued and outstanding	$ 928	$ 915
Additional paid-in capital	744,575	743,919
Accumulated deficit	(809,532)	(780,803)
Accumulated other comprehensive income	1,436	2,619
Total shareholders' deficit	(62,593)	(33,350)
Total liabilities and shareholders' deficit	$ 31,939	$ 61,211