Regulatory Capital Restrictions (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Retained Earnings, Unappropriated	$ 31.0
Maximum Amount of Shareholder Dividends	15.1
Hallmark Insurance Company [Member] | Hallmark [Member]
Insurance Agency Management Fee	9.0	6.0	5.7
American Hallmark Insurance Company and Texas Builders Insurance Company [Member]
Statutory Accounting Practices, Future Dividend Payments Restrictions	greater of statutory net income for the prior calendar year or 10% of statutory policyholders' surplus as of the prior year end.
Hallmark National Insurance Company [Member]
Statutory Accounting Practices, Future Dividend Payments Restrictions	greater of 10% of statutory policyholders' surplus as of the prior December 31 or statutory net income as of the prior December 31.
Subsidiaries [Member]
Maximum Amount of Shareholder Dividends	21.0
Hallmark Insurance Company Subsidiaries [Member]
Statutory Accounting Practices, Future Dividend Payments Restrictions	lesser of 10% of prior year policyholders' surplus or prior year's net investment income
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	189.5
Statutory Accounting Practices, Statutory Capital and Surplus, Balance	176.5	172.6
Statutory Accounting Practices, Statutory Net Income Amount	3.1		5.1
Statutory Accounting Practices Statutory Net Loss Amount		$ 17.2
Hallmark Specialty Insurance Company [Member]
Statutory Accounting Practices, Future Dividend Payments Restrictions	greater of 10% of prior year policyholders' surplus or prior year's statutory net income, not including realized capital gains.