Mortgage Loans On Real Estate, Additions [Abstract]

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Mortgage Loans On Real Estate, Deductions [Abstract]

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Mortgage Loans On Real Estate, Net

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Total carrying amount of mortgage loans as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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The carrying amount of the outstanding balance due under the mortgage loan.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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The amount of principal collected on mortgage loans on real estate during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
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Amount of the contractual principal due at the origination of the mortgage loan (face amount).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
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-Subparagraph (SX 210.12-29)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
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-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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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.

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Total amount of new mortgage loans on real estate during the reporting period.

+ References

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Total amount of additions to mortgage loans other than new loans during the reporting period.

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Amount of increase (decrease) in mortgage loans on real estate.

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Amount of prior lien on the real estate that secures the mortgage loan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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-Publisher FASB
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-Section S99
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-Subparagraph (SX 210.5-04.(c) Schedule IV)
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Amount of reserve for write-down of a mortgage loan on real estate.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.7)
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-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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SCHEDULE IV MORTGAGE LOANS ON REAL ESTATE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance at the beginning of the period	$ 241,038	$ 209,275	$ 162,870
Additions during period:
Draws	0	8,713	51,217
New mortgage loans	3,767	20,411	4,500
Interest income added to principal	690	2,639	1,781
Deductions during period:
Paydowns/Repayments	(206,469)	0	(11,093)
Balance at the end of the year	39,026	$ 241,038	$ 209,275
Mortgages [Member]
Mortgage Loans on Real Estate [Line Items]
Prior Liens	0
Principal Balance	38,231
Book Value	38,262
Loan Loss Allowance	(1,620)
Net Book Value	$ 36,642
Mortgages [Member] \| Weston [Member]
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	9.00%
Prior Liens	$ 0
Principal Balance	16,079
Book Value	$ 16,079
Mortgages [Member] \| Ramsey [Member]
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	9.00%
Prior Liens	$ 0
Principal Balance	13,876
Book Value	$ 13,887
Mortgages [Member] \| Marshfield II [Member]
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	9.00%
Prior Liens	$ 0
Principal Balance	5,209
Book Value	$ 5,222
Mortgages [Member] \| Madeira [Member]
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	10.00%
Prior Liens	$ 0
Principal Balance	3,067
Book Value	3,074
Construction Mortgages [Member]
Mortgage Loans on Real Estate [Line Items]
Prior Liens	0
Principal Balance	39,026
Book Value	$ 37,484
Construction Mortgages [Member] \| McKinney [Member]
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	8.00%
Prior Liens	$ 0
Principal Balance	795
Book Value	$ 842