Stockholders' Equity - Warrants (Details) - $ / shares |
6 Months Ended | 12 Months Ended |
---|---|---|
Jun. 30, 2017 |
Dec. 31, 2016 |
|
Number of Warrants | ||
Balance of warrants outstanding at the beginning of the period (in shares) | 5,505,901 | |
Exercised (in shares) | (1,177,024) | |
Balance of warrants outstanding at the end of the period (in shares) | 4,328,877 | 5,505,901 |
Weighted Average Exercise Price Per Share | ||
Weighted average exercise price of warrants at the beginning of the period (in USD per share) | $ 3.83 | |
Exercised (in USD per share) | 5.32 | |
Weighted average exercise price of warrants at the end of the period (in USD per share) | $ 3.42 | $ 3.83 |
Term | ||
Weighted-Average Remaining Contractual Term | 1 year 5 months 3 days | 1 year 7 months 6 days |