Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Basis of Presentation (Narrative) (Details) $ in Thousands, shares in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2016 USD ($) home lot	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) shares	Jun. 30, 2016 USD ($) shares	May 03, 2017 lot	Dec. 31, 2016 USD ($)
Finite-Lived Intangible Assets [Line Items]
Cash paid to acquire business				$ 0	$ 430,025
Number of units in real estate property \| lot						4,600
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount \| shares				0.1	2.3
Residential mortgage loans available-for-sale fair value		$ 364,939		$ 364,939			$ 539,496
Residential mortgage loans available-for-sale aggregate outstanding principal balance		353,300		353,300			529,700
Net gain (loss) from change in fair value		(2,200)	$ 400	(4,100)	$ 1,300
Net gains from the sale of mortgages		$ 27,700	$ 25,800	$ 52,900	$ 47,300
Variability in future cash flows of derivative instruments in days				75 days
Income statement impact ASU 2016-09 adoption		3.7
Interest rate lock commitments
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount		$ 371,600		$ 371,600			273,900
Forward contracts
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount		576,000		576,000			610,000
Whole loan commitments
Finite-Lived Intangible Assets [Line Items]
Derivative, notional amount		$ 115,200		$ 115,200			157,600
JW Homes (Wieland)
Finite-Lived Intangible Assets [Line Items]
Cash paid to acquire business	$ 430,500
Number of units in real estate property \| lot	7,000
Goodwill	$ 40,400
In Inventory \| JW Homes (Wieland)
Finite-Lived Intangible Assets [Line Items]
Number of units in real estate property \| home	375
Land Option Contracts \| JW Homes (Wieland)
Finite-Lived Intangible Assets [Line Items]
Number of units in real estate property \| lot	1,300
Sales Order Backlog \| JW Homes (Wieland)
Finite-Lived Intangible Assets [Line Items]
Number of units in real estate property \| home	317
Trade Names \| JW Homes (Wieland)
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 18,000
Remaining amortization period	20 years
New Accounting Pronouncement, Early Adoption, Effect \| Retained Earnings \| Accounting Standards Update 2016-09, Excess Tax Benefit Component
Finite-Lived Intangible Assets [Line Items]
Cumulative effect of new accounting principle in period of adoption							18,600
Deferred income tax assets, net							$ 18,600