Schedule II - Condensed Financial Information of Registrant (Parent Company Only) (Comprehensive (loss) Income) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Investment loss, net of expenses                 $ 13,969 $ 12,383 $ 12,884
Management fee income                 5,952 5,279 5,830
Total revenues $ 90,071 $ 93,684 $ 97,197 $ 91,450 $ 88,004 $ 81,417 $ 80,836 $ 87,109 372,402 337,366 389,428
Interest expense                 3,906 4,576 4,599
Amortization of intangible assets                 2,468 2,526 3,115
Loss before equity in undistributed earnings (loss) of subsidiaries and income tax benefit 5,087 9,835 9,275 7,689 5,600 4,728 2,042 6,412 31,886 18,782 11,080
Income tax benefit $ 1,641 $ 3,137 $ 2,899 $ 2,346 $ 1,833 $ 1,265 $ 391 $ 1,864 10,023 5,353 2,835
Net income (loss) attributable to Hallmark Financial Services, Inc.                 21,863 13,429 8,245
Parent Company [Member]                      
Investment loss, net of expenses                 120 133 (190)
Dividend income from subsidiaries                 8,000 8,000  
Management fee income                 10,053 9,614 8,518
Total revenues                 18,173 17,747 8,328
Operating expenses                 10,222 9,759 7,764
Interest expense                 3,906 4,576 4,599
Operating Costs and Expenses                 14,128 14,335 12,363
Loss before equity in undistributed earnings (loss) of subsidiaries and income tax benefit                 4,045 3,412 (4,035)
Income tax benefit                 (1,273) (1,623) (1,227)
Income (loss) before equity in undistributed earnings of subsidiaries                 5,318 5,035 (2,808)
Equity in undistributed share of earnings (loss) in subsidiaries                 16,545 8,394 11,053
Net income (loss) attributable to Hallmark Financial Services, Inc.                 21,863 13,429 8,245
Comprehensive income (loss)                 $ 11,480 $ 14,347 $ 17,229