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Telford Acquisition - Summary of Preliminary Estimate of Trademark Acquired (Detail) - Telford Homes Plc [Member] - USD ($) $ in Thousands	Oct. 01, 2019	Dec. 31, 2019
Business Acquisition [Line Items]
Amount Assigned at Acquisition Date	$ 26,749
Trademarks [Member]
Business Acquisition [Line Items]
Amortization Period	20 years
Amount Assigned at Acquisition Date	$ 26,749
Accumulated Amortization and Foreign Currency Translation		$ 1,725
Net Carrying Value		$ 28,474

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