Loans and Investments, Summary of impaired loans (Details) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($) loan	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) loan
Loans and Investments
Unpaid Principal Balance (UPB)	$ 170,144		$ 169,824
Carrying Value	163,907		163,550
Allowance for Loan Losses	63,108		$ 62,783
Average Recorded Investment	169,985	$ 197,247
Interest Income Recognized	$ 29	357
Number of impaired loans \| loan	5		5
Land
Loans and Investments
Unpaid Principal Balance (UPB)	$ 131,411		$ 131,086
Carrying Value	125,174		124,812
Allowance for Loan Losses	54,208		53,883
Average Recorded Investment	131,249	131,086
Hotel
Loans and Investments
Unpaid Principal Balance (UPB)	34,750		34,750
Carrying Value	34,750		34,750
Allowance for Loan Losses	5,700		5,700
Average Recorded Investment	34,750	34,750
Interest Income Recognized		310
Office
Loans and Investments
Unpaid Principal Balance (UPB)	2,283		2,288
Carrying Value	2,283		2,288
Allowance for Loan Losses	1,500		1,500
Average Recorded Investment	2,286	27,560
Interest Income Recognized	29	25
Commercial
Loans and Investments
Unpaid Principal Balance (UPB)	1,700		1,700
Carrying Value	1,700		1,700
Allowance for Loan Losses	1,700		$ 1,700
Average Recorded Investment	$ 1,700	1,700
Multifamily
Loans and Investments
Average Recorded Investment		2,151
Interest Income Recognized		$ 22

The carrying value of impaired financing receivables derived after deducting unearned revenue and other holdbacks.

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- Definition

Represents the number of impaired loans.

+ References

No definition available.

+ Details

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

+ Details

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- Definition

Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

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- Definition

Amount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.

+ References

+ Details

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- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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