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Stock-Based Compensation - Summary of Stock Options (Details) - 3 months ended Mar. 31, 2014 - $ / shares
Total
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Beginning number of shares; outstanding 3,165,583
Beginning weighted-average exercise price; outstanding $ 0.13
Number of shares; expired (109,083)
Weighted-average exercise price; expired $ .63
Ending number of shares; outstanding 3,056,500
Ending weighted-average exercise price; outstanding $ .12
Number of Shares; exercisable 3,056,500
Weighted-average exercise price; exercisable $ .12