Variable Interest Entities (Details) (Amerisafe Capital Trust II [Member], USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
May 31, 2012	Mar. 31, 2013
Amerisafe Capital Trust II [Member]
Variable Interest Entities (Textual) [Abstract]
Proceeds from issuance of trust preferred securities		$ 25.0
Purchase of subordinated debt securities		25.8
Redemption of debt securities	12.9
Subordinated debt securities	$ 12.9	$ 25.8

The cash inflow from issuance of preferred stocks by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

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The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets or underlying collateral.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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