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Equity-Warrants, Information about Warrants Outstanding (Details) - Warrants [Member]
 9 Months Ended
Sep. 30, 2015
$ / shares
shares
Class of Warrant or Right [Line Items]  
Exercisable, beginning of period (in shares) 157,467
Became exercisable (in shares) 25,000
Exercised (in shares) 120,161
Terminated/cancelled/expired (in shares) 37,306
Exercisable, end of period (in shares) 25,000
Series I Warrants [Member]  
Class of Warrant or Right [Line Items]  
Original number of warrants issued (in shares) 2,619,036 [1]
Exercise price per common share (in dollars per share) | $ / shares $ 3.59
Exercisable, beginning of period (in shares) 157,467
Became exercisable (in shares) 0
Exercised (in shares) 120,161
Terminated/cancelled/expired (in shares) 37,306
Exercisable, end of period (in shares) 0
Expiration date March 31, 2015
Advisor Warrants [Member]  
Class of Warrant or Right [Line Items]  
Original number of warrants issued (in shares) 25,000 [2]
Exercise price per common share (in dollars per share) | $ / shares $ 7.00
Exercisable, beginning of period (in shares) 0
Became exercisable (in shares) 25,000
Exercised (in shares) 0
Terminated/cancelled/expired (in shares) 0
Exercisable, end of period (in shares) 25,000
Expiration date April 30, 2020
[1] Referred to as our Series I Warrants.
[2] Referred to as Advisor Warrants