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Subsequent Events - Additional Information (Detail) - USD ($)				3 Months Ended
	Apr. 28, 2016	Apr. 13, 2016	Jan. 14, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Subsequent Event [Line Items]
Cash dividend declared per common share			$ 0.14	$ 0.14	$ 0.12
Common stock, par value				$ 0.01		$ 0.01
Issuance of common stock					$ 503,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Cash dividend declared per common share		$ 0.14
Dividends payable date		Jul. 05, 2016
Dividends payable, shareholders record date		Jun. 15, 2016
Subsequent Event [Member] | Private Placement [Member] | RenaissanceRe Ventures Ltd [Member]
Subsequent Event [Line Items]
Number of common stock, shares issued	583,771
Common stock, par value	$ 17.13
Issuance of common stock	$ 10,000,000
Cash proceeds from private placement	2,965,000
Proceeds used to cancellation of outstanding indebtedness	$ 7,035,000

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Paragraph 30
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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
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- 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.

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No definition available.

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- Definition

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