Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
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- Details

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SUBSEQUENT EVENT (Details) - USD ($)	Jul. 30, 2018	Jul. 29, 2018	Jun. 30, 2018	May 27, 2015
New York Life Investors LLC
Subsequent Event [Line Items]
Total borrowing capacity of facility				$ 150,000,000.0
Remaining borrowing capacity			$ 75,000,000.0
New York Life Investors LLC \| Subsequent Event [Member]
Subsequent Event [Line Items]
Total borrowing capacity of facility	$ 200,000,000.0	$ 150,000,000.0
Prudential
Subsequent Event [Line Items]
Total borrowing capacity of facility			250,000,000.0
Remaining borrowing capacity			$ 100,000,000.0
Prudential \| Subsequent Event [Member]
Subsequent Event [Line Items]
Remaining borrowing capacity	$ 150,000,000.0	$ 100,000,000.0