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Stockholders' Equity and Equity Compensation - Summary of Stock Option Activity (Details) - $ / shares
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Shares    
Outstanding, beginning balance (in shares) 288,383  
Granted (in shares) 0 0
Exercised (in shares) (18,193)  
Canceled/Expired (in shares) (1,836)  
Outstanding, ending balance (in shares) 268,354  
Exercisable (in shares) 268,354  
Weighted Average Exercise Price    
Outstanding, beginning balance (in dollars per share) $ 21.73  
Granted (in dollars per share) 0.00  
Exercised (in dollars per share) 16.80  
Canceled/Expired (in dollars per share) 25.58  
Outstanding, ending balance (in dollars per share) 22.04  
Exercisable (in dollars per share) $ 22.04