Fair Value of Financial Assets and Liabilities - Derivative Instruments (Fair Value of Financial Liabilities Measured on Recurring Basis) (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Schedule Of Derivative Liabilities At Fair Value [Line Items]
Series B preferred stock derivative liability	$ 91,000	$ 1,493,000
Warrant liability	2,000	6,000
Total liabilities	$ 93,000	$ 1,499,000
Fair Value, Inputs, Level 1 [Member]
Schedule Of Derivative Liabilities At Fair Value [Line Items]
Series B preferred stock derivative liability
Warrant liability
Total liabilities
Fair Value, Inputs, Level 2 [Member]
Schedule Of Derivative Liabilities At Fair Value [Line Items]
Series B preferred stock derivative liability
Warrant liability
Total liabilities
Fair Value, Inputs, Level 3 [Member]
Schedule Of Derivative Liabilities At Fair Value [Line Items]
Series B preferred stock derivative liability	$ 91,000	$ 1,493,000
Warrant liability	2,000	6,000
Total liabilities	$ 93,000	$ 1,499,000