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Equity - Summary of Option Exercises between Cashless Net Exercises and Cash Exercises (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Equity [Abstract]    
Shares granted in net exercise of options   33,938
Options forfeited in net exercise of options   76,062
Total net exercise options   110,000
Weighted average exercise price for net exercise options [1] $ 2.51
Options exercised for cash  
Weighted average exercise price for options exercised for cash  
[1] All shares issued in connection with option exercises were newly issued shares.