Notes Receivable, Net - Credit Quality Indicators for RRE and Consumer Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 13,432,031	$ 11,122,696
Residential Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	427,814	208,679
One Year Prior	179,395	181,924
Two Years Prior	66,543	100,273
Three Years Prior	51,095	76,394
Four Years Prior	42,181	53,819
Prior	146,299	179,085
Revolving loans	138,556	2,334
Total	1,051,883	802,508
Residential Real Estate | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	427,318	207,432
One Year Prior	178,016	179,915
Two Years Prior	66,470	99,135
Three Years Prior	50,816	75,527
Four Years Prior	42,005	52,905
Prior	143,473	174,281
Revolving loans	138,556	2,334
Total	1,046,654	791,529
Residential Real Estate | 30-89 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	496	1,247
One Year Prior	1,232	2,009
Two Years Prior	0	556
Three Years Prior	0	867
Four Years Prior	0	87
Prior	861	1,876
Revolving loans	0	0
Total	2,589	6,642
Residential Real Estate | Non-Accrual and 90 Days or More Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	0	0
One Year Prior	147	0
Two Years Prior	73	582
Three Years Prior	279	0
Four Years Prior	176	827
Prior	1,965	2,928
Revolving loans	0	0
Total	2,640	4,337
Home Equity
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	871	89
One Year Prior	303	807
Two Years Prior	1,293	1,782
Three Years Prior	1,329	1,452
Four Years Prior	886	1,016
Prior	11,494	14,025
Revolving loans	720,112	617,234
Total	736,288	636,405
Home Equity | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	871	89
One Year Prior	303	771
Two Years Prior	1,260	1,782
Three Years Prior	1,328	1,426
Four Years Prior	886	1,016
Prior	10,589	13,042
Revolving loans	717,089	612,545
Total	732,326	630,671
Home Equity | 30-89 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	0	0
One Year Prior	0	0
Two Years Prior	0	0
Three Years Prior	0	26
Four Years Prior	0	0
Prior	576	463
Revolving loans	1,518	2,397
Total	2,094	2,886
Home Equity | Non-Accrual and 90 Days or More Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	0	0
One Year Prior	0	36
Two Years Prior	33	0
Three Years Prior	1	0
Four Years Prior	0	0
Prior	329	520
Revolving loans	1,505	2,292
Total	1,868	2,848
Other Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	151,407	131,302
One Year Prior	80,531	66,327
Two Years Prior	37,036	42,827
Three Years Prior	19,563	16,287
Four Years Prior	8,591	10,519
Prior	17,763	18,692
Revolving loans	33,948	27,117
Total	348,839	313,071
Other Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	150,910	131,098
One Year Prior	80,072	65,921
Two Years Prior	36,647	42,557
Three Years Prior	19,268	16,202
Four Years Prior	8,506	10,409
Prior	15,968	17,334
Revolving loans	33,680	26,704
Total	345,051	310,225
Other Consumer | 30-89 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	469	158
One Year Prior	443	170
Two Years Prior	187	212
Three Years Prior	144	38
Four Years Prior	78	48
Prior	1,589	1,155
Revolving loans	257	411
Total	3,167	2,192
Other Consumer | Non-Accrual and 90 Days or More Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Current Year	28	46
One Year Prior	16	236
Two Years Prior	202	58
Three Years Prior	151	47
Four Years Prior	7	62
Prior	206	203
Revolving loans	11	2
Total	$ 621	$ 654