Notes Receivable (Financing Receivable Credit Quality Indicators And Past Due By Year Of Origination) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 544,806	$ 551,393
VOI note receivable balance had not yet been charged off	13,100	11,400
Defaults [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		1,678
Fiscal Year Before Current	2,054	13,678
Two Years Before Current	3,272	14,297
Three Years Before Current	2,780	9,331
Four Years Before Current	1,909	7,299
More Than Five Years Before Current	1,106	9,244
Total	11,121	55,527
Allowance For Loan Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	9,036	33,441
Fiscal Year Before Current	33,497	37,845
Two Years Before Current	36,001	27,552
Three Years Before Current	25,168	16,794
Four Years Before Current	15,308	12,097
More Than Five Years Before Current	24,232	14,315
Total	143,242	142,044
Current [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	34,485	113,954
Fiscal Year Before Current	105,915	129,817
Two Years Before Current	119,847	89,744
Three Years Before Current	83,452	61,279
Four Years Before Current	57,110	50,671
More Than Five Years Before Current	110,863	71,646
Total	511,672	517,111
31-60 Days [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	70	1,040
Fiscal Year Before Current	1,118	1,531
Two Years Before Current	1,245	1,093
Three Years Before Current	890	925
Four Years Before Current	402	547
More Than Five Years Before Current	865	642
Total	4,590	5,778
61-90 Days [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		807
Fiscal Year Before Current	1,015	1,137
Two Years Before Current	1,302	931
Three Years Before Current	667	777
Four Years Before Current	738	365
More Than Five Years Before Current	912	524
Total	4,634	4,541
Over 91 Days [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		934
Fiscal Year Before Current	1,958	2,539
Two Years Before Current	3,102	5,711
Three Years Before Current	4,967	4,679
Four Years Before Current	4,538	3,235
More Than Five Years Before Current	9,345	6,865
Total	23,910	23,963
Total [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	34,555	116,735
Fiscal Year Before Current	110,006	135,024
Two Years Before Current	125,496	97,479
Three Years Before Current	89,976	67,660
Four Years Before Current	62,788	54,818
More Than Five Years Before Current	121,985	79,677
Total	544,806	551,393
701+ [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	20,054	70,874
Fiscal Year Before Current	64,272	85,294
Two Years Before Current	77,853	56,490
Three Years Before Current	51,834	37,371
Four Years Before Current	34,447	27,638
More Than Five Years Before Current	56,733	35,693
Total	305,193	313,360
601-700 [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	13,783	42,095
Fiscal Year Before Current	41,385	44,672
Two Years Before Current	42,192	34,181
Three Years Before Current	31,643	24,700
Four Years Before Current	22,725	22,656
More Than Five Years Before Current	51,915	34,779
Total	203,643	203,083
Less Than 601 [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	718	3,737
Fiscal Year Before Current	3,744	4,491
Two Years Before Current	4,272	3,003
Three Years Before Current	2,821	2,113
Four Years Before Current	1,996	2,188
More Than Five Years Before Current	5,602	3,954
Total	19,153	19,486
Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		29
Fiscal Year Before Current	605	567
Two Years Before Current	1,179	3,805
Three Years Before Current	3,678	3,476
Four Years Before Current	3,620	2,336
More Than Five Years Before Current	7,735	5,251
Total	16,817	15,464
Total by FICO Score [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	34,555	116,735
Fiscal Year Before Current	110,006	135,024
Two Years Before Current	125,496	97,479
Three Years Before Current	89,976	67,660
Four Years Before Current	62,788	54,818
More Than Five Years Before Current	121,985	79,677
Total	$ 544,806	$ 551,393