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Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Nov. 09, 2016
Nov. 04, 2016
Aug. 11, 2016
Sep. 30, 2016
Sep. 30, 2015
Subsequent Event [Line Items]          
Proceeds from issuance of common stock       $ 6,567 $ 730
Common Stock          
Subsequent Event [Line Items]          
Proceeds from issuance of common stock     $ 5,500    
Common Stock | Underwritten Public Offering | Scenario, Forecast          
Subsequent Event [Line Items]          
Proceeds from issuance of common stock $ 50,800        
Proceeds from issuance of common stock if option is exercised $ 58,400        
Common Stock | Underwritten Public Offering | Subsequent Event          
Subsequent Event [Line Items]          
Issuance of stock (shares)   2,100,000      
Common stock share price (usd per share)   $ 25.00      
Discount on shares (usd per share)   $ 0.75      
Option period to purchase additional shares   30 days      
Additional stock available for purchase (shares)   315,000