Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating activities
Net income	$ 17,731	$ 18,204
Adjustments to reconcile net income to net cash provided by operating activities:
Net amortization of bond premiums and discounts	4,999	1,368
Provision for depreciation and amortization	1,806	1,112
Net realized gains on investment securities	(2,516)	(2,551)
Deferred federal income taxes	(504)	(1,522)
Stock compensation expense	413	485
Increase in deferred policy acquisition costs, net	(6,965)	(4,669)
(Decrease) increase in reserves for losses and loss adjustment expenses	(3,249)	5,858
Increase in premiums receivable	(40,023)	(41,315)
Increase in unearned premiums and service fees	37,354	42,413
Decrease in interest receivable and other assets	1,740	981
Increase in prepaid reinsurance premiums	(4,931)	(14,325)
(Decrease) increase in accounts payable, commissions and other liabilities and assessments and fees payable	(6,608)	6,005
Increase in amounts withheld or retained for accounts of others	1,870	647
Decrease in reinsurance recoverable	7,239	4,919
Increase in reinsurance balances payable	11,955	11,786
Other	(69)	(58)
Net cash provided by operating activities	20,242	29,338
Investing activities
Purchases of fixed maturities	(158,400)	(191,247)
Purchases of equity securities	(10,814)
Proceeds from sale of fixed maturities	10,022	70,911
Proceeds from sale of equity securities	5,164	156
Proceeds from maturities and redemptions of investments	147,410	216,940
Change in other investments, net	(13,000)
Collection of amounts refundable on purchase price of Vanliner	14,256
Deposit in advance of acquisition		(128,059)
Capital expenditures	(939)	(1,131)
Net cash used in investing activities	(6,301)	(32,430)
Financing activities
Excess tax benefit realized from vesting of restricted stock	54
Additional long-term borrowings	2,000	30,000
Issuance of common shares from treasury upon exercise of stock options or stock award grants	(120)	444
Cash dividends paid on common shares	(3,502)	(3,115)
Net cash (used in) provided by financing activities	(1,568)	27,329
Net increase in cash and cash equivalents	12,373	24,237
Cash and cash equivalents at beginning of period	27,054	18,589
Cash and cash equivalents at end of period	$ 39,427	$ 42,826