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Subsequent Events (Detail)	1 Months Ended		6 Months Ended
	Jul. 31, 2016 USD ($)	Jul. 28, 2016 USD ($) unit	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Nov. 30, 2014 USD ($)
Subsequent Event [Line Items]
Principal payments received on commercial mortgage loans			$ 36,044,000	$ 28,474,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Loans funded, amount	$ 3,637,000
Principal payments received on commercial mortgage loans	$ 15,300,000
Commercial mortgage loans [Member]
Subsequent Event [Line Items]
Mortgage loan, face amount					$ 50,000,000
Commercial mortgage loans [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Mortgage loans, increase to mortgage loan origination		$ 9,500,000
Mortgage loans, increase in collateral units | unit		5

X

- Definition

Mortgage Loans on Real Estate, Funded Amount of Mortgages

+ References

No definition available.

+ Details

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X

- Definition

Mortgage Loans on Real Estate, Increase in Collateral Units

+ References

No definition available.

+ Details

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X

- Definition

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
-Paragraph 1
-Subparagraph (SX 210.12-29)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: 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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X

- Definition

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

+ References

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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X

- Definition

The cash inflow from collection of repayments from borrowers on loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3461-108585

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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