Quarterly report pursuant to Section 13 or 15(d)

Treasury Stock - Additional Information (Details)

v3.19.3
Treasury Stock - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Aug. 07, 2018
Sep. 09, 2019
Aug. 31, 2017
Sep. 30, 2019
Sep. 30, 2019
Share Repurchase Program August 2017          
Equity Class Of Treasury Stock [Line Items]          
Common stock repurchase, value       $ 3.6 $ 3.6
Common Stock | Share Repurchase Program August 2017          
Equity Class Of Treasury Stock [Line Items]          
Stock approved for repurchase, value     $ 7.0    
Period of stock repurchase program     12 months    
Additional period of stock repurchase program 12 months        
Common Stock | Share Repurchase Program September 9, 2019          
Equity Class Of Treasury Stock [Line Items]          
Stock approved for repurchase, value   $ 7.0      
Period of stock repurchase program   12 months      
Common Stock | Share Repurchase Program August 2017 and September 2019          
Equity Class Of Treasury Stock [Line Items]          
Stock repurchase, shares       48,000 63,000
Stock repurchase, average price per share       $ 12.54 $ 12.75
Stock repurchase, cost       $ 0.6 $ 0.8