Income Taxes Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Deferred tax assets:
Federal net operating carryforwards	$ 0	$ 26,884
State net operating loss carryforwards	11,906	20,759
Impairment losses	118,203	151,050
Prepaid income from land sales	5,515	10,210
Other	4,324	7,592
Total gross deferred tax assets	139,948	216,495
Valuation allowance	(5,870)	(95,953)
Total net deferred tax assets	134,078	120,542
Deferred tax liabilities:
Investment in real estate and property and equipment basis differences	1,438	1,726
Deferred gain on land sales and involuntary conversions	31,574	31,385
Prepaid pension asset	14,729	15,596
Installment sales	126,002	58,969
Total gross deferred tax liabilities	173,743	107,676
Total net deferred tax (liability)	39,665	0
Total net deferred tax asset	$ 0	$ 12,866