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Debt Debt (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Line of Credit Facility [Line Items]    
Line of Credit Facility, Expiration Date Jul. 18, 2021  
Debt Instrument, Unused Borrowing Capacity, Amount $ 666,600  
Notes payable bank - homebuilding operations 66,000 $ 117,400
letters of credit outstanding under credit facility 69,100  
Maximum borrowing availability subject to limit 364,900  
Minimum Tangible Net Worth $ 586,200  
Leverage ratio 60.00%  
Revolving Credit Facility [Member]    
Line of Credit Facility [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 500,000  
Sub-limit for letters of credit $ 125,000  
Basis Point Spread on Variable Rate 2.50%  
Consolidated EBITDA [Member]    
Line of Credit Facility [Line Items]    
Interest Coverage Ratio 1.5  
Consolidated Interest Incurred [Member]    
Line of Credit Facility [Line Items]    
Interest Coverage Ratio 1.0  
2025 Senior Notes [Member]    
Line of Credit Facility [Line Items]    
Debt Instrument, Face Amount $ 250,000  
Debt Instrument, Interest Rate, Stated Percentage 5.625%  
2021 Senior Notes [Member]    
Line of Credit Facility [Line Items]    
Debt Instrument, Face Amount $ 300,000  
Debt Instrument, Interest Rate, Stated Percentage 6.75%