CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Receivables:
Insurance premiums and other, allowance for doubtful accounts	$ 405,000	$ 442,000
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	4,000,000	4,000,000
Preferred stock, shares issued (in shares)	70,000	70,000
Preferred stock, shares outstanding (in shares)	70,000	70,000
Preferred stock, redemption value	$ 7,000,000	$ 7,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	22,400,894	22,373,900
Common stock, shares outstanding (in shares)	21,274,241	22,257,035
Treasury stock, at cost (in shares)	1,126,653	116,865