Stock-Based Compensation Arrangements (Stock Option and Restricted Stock Grants) (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Shares
Outstanding, beginning of period	4,523,900	5,884,050
Granted	18,193,027	137,000
Stock options exercised	0	0
Restricted stock exercised	0	0
Forfeited/Expired	(1,059,151)	(1,497,150)
Outstanding, end of period	21,657,776	4,523,900
Exercisable, end of period	3,665,124	1,645,161
Weighted Avg. Exercise Price
Outstanding, beginning of period	$ 0.39	$ 0.43
Granted	0.17	0.35
Stock options exercised	0.00	0.00
Restricted stock exercised	0.00	0.00
Forfeited/Expired	0.17	0.53
Outstanding, end of period	0.21	0.39
Exercisable, end of period	$ 0.32	$ 0.43