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

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

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

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Number of new stock issued during the period.

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Equity.

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Proceeds used to cancellation of outstanding indebtedness.

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Stockholders' Equity - Additional Information (Detail) - USD ($)				1 Months Ended		3 Months Ended		8 Months Ended	9 Months Ended
	Aug. 31, 2016	Apr. 13, 2016	Jan. 14, 2016	Sep. 30, 2016	Apr. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Nov. 30, 2015
Equity [Line Items]
Amount of shares authorized to repurchase								$ 20,000,000				$ 10,000,000
Treasury shares acquired				95,000				342,107
Shares repurchased during period				$ 2,000,000				$ 6,400,000
Common stock, par value				$ 0.01		$ 0.01			$ 0.01		$ 0.01
Issuance of common stock										$ 511,000
Dividends per share declared on outstanding common stock	$ 0.14	$ 0.14	$ 0.14			$ 0.14	$ 0.12		$ 0.42	$ 0.36
Installment1-FY2016
Equity [Line Items]
Dividends payable date									Mar. 02, 2016
Dividends payable, shareholders record date									Feb. 18, 2016
Installment2-FY2016
Equity [Line Items]
Dividends payable date									Jul. 05, 2016
Dividends payable, shareholders record date									Jun. 15, 2016
Installment3-FY2016
Equity [Line Items]
Dividends payable date									Oct. 24, 2016
Dividends payable, shareholders record date									Sep. 12, 2016
Private Placement [Member] \| RenaissanceRe Ventures Ltd [Member]
Equity [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