Litigation Funding Agreement (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Litigation Funding Agreement [Member]
Legal expenses incurred attributable to Litigation Funding Agreement [Abstract]
Legal expense	$ 304,000	$ 1,169,000	$ 1,575,000	$ 1,169,000
R. A. Bianco [Member]
Litigation Funding Commitment [Abstract]
Litigation fund	$ 7,000,000		$ 7,000,000
R. A. Bianco [Member] | Minimum [Member]
Litigation Funding Commitment [Abstract]
Percentage of recovery sharing ratio			30.00%
R. A. Bianco [Member] | Maximum [Member]
Litigation Funding Commitment [Abstract]
Percentage of recovery sharing ratio			45.00%