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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Dec. 31, 2015
Current assets:      
Cash and cash equivalents $ 18,073,000 $ 18,083,000 $ 29,730,000
Restricted cash 13,597,000 18,022,000 401,000
Litigation settlement insurance recovery   0 21,700,000
Prepaid expenses and other current assets 434,000 581,000 1,398,000
Current assets of discontinued operations 189,000 813,000 392,000
Total current assets 32,293,000 37,499,000 53,621,000
Equipment and furnishings, net 148,000 199,000 335,000
In-process research and development 12,864,000 12,864,000 12,864,000
GALE-401 rights 9,255,000 9,255,000 9,255,000
Goodwill 5,898,000 5,898,000 5,898,000
Deposits and other assets 96,000 96,000 171,000
Total assets 60,554,000 65,811,000 82,144,000
Current liabilities:      
Accounts payable 385,000 840,000 1,597,000
Accrued expenses and other current liabilities 2,634,000 4,292,000 5,292,000
Litigation settlement payable 1,300,000 950,000 25,000,000
Fair value of warrants potentially settleable in cash 8,510,000 1,860,000 14,518,000
Current portion of long-term debt 13,025,180 16,397,030 4,739,000
Current liabilities of discontinued operations 8,685,000 6,059,000 5,925,000
Total current liabilities 34,539,000 30,398,000 57,071,000
Deferred tax liability 5,661,000 5,661,000 5,418,000
Contingent purchase price consideration 1,227,000 1,095,000 6,142,000
Total liabilities 41,427,000 37,154,000 68,631,000
Commitments and contingencies
Stockholders' equity:      
Preferred stock 0 0 0
Common stock 4,000 2,000 15,000
Additional paid-in capital 346,026,000 335,436,000 296,730,000
Accumulated deficit (323,054,000) (302,932,000) (279,383,000)
Less treasury shares at cost, 33,750 shares (3,849,000) (3,849,000) (3,849,000)
Total stockholders' equity 19,127,000 28,657,000 13,513,000
Total liabilities and stockholders' equity $ 60,554,000 65,811,000 $ 82,144,000
Scenario, Previously Reported [Member]      
Stockholders' equity:      
Common stock   15,000  
Additional paid-in capital   $ 335,423,000