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Warrant Liability (Tables)
6 Months Ended
Jun. 30, 2015
Warrant Liability [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]
The inputs to the model were as follows:
 
 
 
June 30, 2015
 
 
December 31, 2014
 
 
 
 
 
 
 
 
Stock Price
 
$
12.63
 
 
$
10.15
 
Dividend Yield
 
$
0.125
 
 
 
N/A
 
Risk-free rate
 
 
0.46
%
 
 
0.67
%
Expected Term
 
 
1.72
 
 
 
1.97
 
Expected Volatility
 
 
32.69
%
 
 
33.62
%
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
The table below provides a reconciliation of the beginning and ending balances for the warrant liability measured using significant unobservable inputs (Level 3):
 
Balance - December 31, 2014
 
$
19,991
 
Fair value adjustment – three months ended March 31, 2015
 
 
(5,078)
 
Balance – March 31, 2015
 
 
14,913
 
Fair value adjustment – three months ended June 30, 2015
 
 
16,391
 
Balance - June 30, 2015
 
$
31,304