The cash outflow expected to be contributed to subsidiaries during the period.

No definition available.

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- Definition

The projected cash outflow associated the amount expected to be paid on the acquisition of business.

+ References

No definition available.

+ Details

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- Definition

Shares of legal entity needed to cause a second step, short-form merger with its parent.

+ References

No definition available.

+ Details

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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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- Definition

Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums written.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 17

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 605

-Section 50

-Paragraph 1

-Subparagraph (b),(c)

-URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547

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Subsequent Events (unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended		12 Months Ended	0 Months Ended
	Jan. 09, 2014 Subsequent Event [Member] Summit Holdings Southeast, Inc. [Member]	Feb. 17, 2014 Subsequent Event [Member] National Interstate [Member]	Dec. 31, 2013 Minimum [Member] Summit Holdings Southeast, Inc. [Member]	Mar. 06, 2014 Minimum [Member] Subsequent Event [Member] National Interstate [Member]
Subsequent Event [Line Items]
Projected payments to acquire business	$ 250
Anticipated capital contribution at closing	400
Net written premiums of acquired business			$ 500
Tender offer to acquire common stock outstanding (USD per share)		$ 30.00
Percent of shares needed to cause a second step, short-form merger				90.00%