Commitments and Contingencies (Schedule of Expected Land and Lot Purchase Payments Under Option Agreements) (Details) $ in Thousands	Mar. 31, 2019 USD ($) lot	Dec. 31, 2018 lot
Commitments and Contingencies Disclosure [Abstract]
Lots under option \| lot	2,308	1,843
Remainder of 2019	$ 107,083
2019	72,595
2020	24,779
2021	1,970
Total	$ 206,427

Land and Lots under Purchase Options, Expected Purchase Payments, Remainder of Fiscal Year

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Land and lots under Purchase Options, Expected Purchase Payments, Total

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Land and lots under Purchase Options, Expected Purchase Payments, Year Four

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Land and lots under Purchase Options, Expected Purchase Payments, Year Three

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Land and lots under Purchase Options, Expected Purchase Payments, Year Two

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Lots under Purchase Options, Number

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