Unaudited Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Investments:
Fixed maturities	$ 429,460	$ 431,550
Equity securities	160,926	145,828
Limited partnerships	78,892	68,988
Short-term	3,162	4,891
Total Investments	672,440	651,257
Cash and cash equivalents	75,715	59,297
Accounts receivable	105,115	100,830
Reinsurance recoverable	208,737	195,568
Other assets	61,515	62,204
Current federal income taxes	69	3,114
Total Assets	1,123,591	1,072,270
Liabilities and shareholders' equity
Reserves for losses and loss expenses	494,132	474,470
Reserves for unearned premiums	36,561	36,693
Short-term borrowings	20,000	10,000
Accounts payable and accrued expenses	148,248	152,532
Deferred federal income taxes	23,509	16,851
Total Liabilities	722,450	690,546
Shareholders' equity:
Additional paid-in capital	51,634	50,594
Unrealized net gains on investments	59,389	49,089
Foreign exchange adjustment	1,271	1,401
Retained earnings	288,208	280,003
Shareholders' equity	401,141	381,724
Total liabilities and shareholders' equity	1,123,591	1,072,270
Class A voting [Member]
Shareholders' equity:
Common stock	112	112
Class B non-voting [Member]
Shareholders' equity:
Common stock	$ 527	$ 525