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Subsequent Event - Additional Information (Detail) - Subsequent Event
€ / shares in Units, $ / shares in Units, € in Millions, $ in Millions
Jul. 03, 2019
USD ($)
$ / shares
Aug. 06, 2019
Jul. 03, 2019
EUR (€)
€ / shares
Subsequent Event [Line Items]      
Date of business purchase agreement Jul. 03, 2019    
Telford Homes Plc [Member]      
Subsequent Event [Line Items]      
Share price | (per share) $ 4.41   € 3.50
Business combination, cash consideration $ 336.9   € 267.4
Business acquisition percentage of voting interests acquired 75.00% 93.51% 75.00%