Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party TransactionsDuring the year ended December 31, 2020, we entered into LPAs to purchase finished building lots for a total purchase price of approximately $138,100 with Elm Street Development, Inc. (“Elm Street”), which is controlled by one of our directors, William Moran. The independent members of our Board of Directors approved these transactions. During 2020, 2019 and 2018, we purchased developed lots at market prices from Elm Street for approximately $60,200, $44,600 and $36,100, respectively. We also continue to control a parcel of raw land expected to yield approximately 1,900 finished lots through a JV entered into with Elm Street during 2009. We did not make any investments in the JV in 2020, 2019 or 2018.