XML 68 R75.htm IDEA: XBRL DOCUMENT v3.20.1
Contingently redeemable preferred shares - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Aug. 01, 2019
Mar. 31, 2020
Mar. 31, 2019
Jul. 31, 2019
Mar. 31, 2014
Class of Stock [Line Items]          
Repurchase of preference shares   $ 2,867 $ 0    
Dividends paid on redeemable preference shares   $ 1,148 $ 4,816    
Contingently redeemable preference share          
Class of Stock [Line Items]          
Number of shares issued       9,065,200 9,065,200
Stated dividend rate (percent)   8.50%      
Preference shares, par value per share         $ 0.01
Preference shares, liquidation preference per share         25.00
Preference shares, issue price per share         $ 24.50
Number of shares redeemed during the period 6,919,998        
Redemption price per share $ 25.19748        
Contingently redeemable preference share | Prior to June 30, 2019          
Class of Stock [Line Items]          
Stated dividend rate (percent)   8.50%      
Contingently redeemable preference share | On or after June 30, 2019          
Class of Stock [Line Items]          
Preference share dividends, spread on variable rate   6.6785%      
Contingently redeemable preference share | On or after June 30, 2019 | 3 month LIBOR | Minimum          
Class of Stock [Line Items]          
Stated dividend rate (percent)   1.00%      
Arch Capital Group Limited | Contingently redeemable preference share          
Class of Stock [Line Items]          
Repurchase of preference shares $ 11,500