Quarterly report pursuant to Section 13 or 15(d)

Organization and Basis of Presentation - Narrative (Details)

v3.10.0.1
Organization and Basis of Presentation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Aug. 31, 2018
Equity, Class of Treasury Stock [Line Items]      
Stock repurchased during period (shares)   429,558  
Stock repurchased during period   $ 11,123  
Stock Repurchase Program [Member]      
Equity, Class of Treasury Stock [Line Items]      
Number of shares authorized for repurchase, percentage of outstanding (percent)     5.00%
Number of shares authorized for repurchase (shares)     1,600,000
Stock repurchased during period (shares) 429,558    
Stock repurchased during period $ 11,100