Fair Value, Level 3 Inputs (Details) - Level 3 - Discounted cash flows $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($)
Land
Financial assets:
Discount rate (as a percent)	15.00%
Capitalization rate (as a percent)	7.25%
Revenue growth rate (as a percent)	3.00%
Hotel
Financial assets:
Discount rate (as a percent)	9.00%
Capitalization rate (as a percent)	7.00%
Revenue growth rate (as a percent)	6.50%
Office
Financial assets:
Discount rate (as a percent)	11.00%
Capitalization rate (as a percent)	9.00%
Revenue growth rate (as a percent)	2.50%
Commercial \| Rate Lock Commitments \| Weighted average
Financial assets:
Discount rate (as a percent)	10.19%
Fair Value \| Land
Financial assets:
Impaired loans	$ 70,965
Fair Value \| Hotel
Financial assets:
Impaired loans	29,050
Fair Value \| Office
Financial assets:
Impaired loans	783
Fair Value \| Commercial \| Rate Lock Commitments
Financial assets:
Derivative financial instrument	$ 717

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

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- Definition

Ratio of the net operating income produced by an asset and its capital cost (original prices paid to buy the asset), used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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- Definition

Percentage of assumed long-term growth in revenues, used as an input to measure fair value.

+ References

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- References

No definition available.

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- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without 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 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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