XML 67 R54.htm IDEA: XBRL DOCUMENT v3.19.1
Stockholders' Equity - Summary of Warrant Activity (Details)
12 Months Ended
Dec. 31, 2017
$ / shares
shares
Dec. 31, 2016
$ / shares
shares
Warrants Outstanding    
Beginning balance (in shares) | shares 6,750 14,250
Warrants canceled/forfeited (in shares) | shares (6,750) (7,500)
Ending balance (in shares) | shares 0 6,750
Weighted Average Exercise Price During Period    
Beginning balance (in dollars per share) | $ / shares 4.30 4.30
Warrants canceled/forfeited (in dollars per share) | $ / shares 4.30 4.30
Ending balance (in dollars per share) | $ / shares 0.00 4.30