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Stock-Based Compensation Plan (Details) - Independent directors compensation plan [Member] - $ / shares
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Number of Shares      
Beginning Balance, Outstanding 40,000 80,000 200,000
Beginning Balance, Exercisable 40,000 80,000 160,000
Granted 40,000  
Exercised  
Forfeited 80,000  
Ending Balance, Outstanding 40,000 40,000 80,000
Ending Balance, Exercisable 40,000 40,000 80,000
Average Exercise Price per Share      
Beginning Balance, Outstanding $ 1.02 $ 3.83 $ 2.64
Beginning Balance, Exercisable $ 1.02 3.83 2.64
Granted $ 1.02  
Exercised  
Forfeited  
Ending Balance, Outstanding $ 1.02 $ 1.02 3.83
Ending Balance, Exercisable $ 1.02 $ 1.02 $ 3.83
Weighted Average Remaining Contractual Term in Years      
Outstanding 4 years 9 months 7 days 3 months 22 days  
Exercisable 4 years 9 months 7 days 3 months 22 days  
Granted 0 years 4 years 9 months 7 days  
Exercised 0 years 0 years  
Forfeited 0 years 0 years  
Outstanding 4 years 6 months 7 days 4 years 9 months 7 days  
Exercisable 4 years 6 months 7 days 4 years 9 months 7 days