Statement of Financial Position (Parentheticals) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	$ 101,091	$ 91,344
Available-for-sale Equity Securities, Amortized Cost Basis	2,689	2,689
Premiums Receivable, Allowance for Doubtful Accounts	3,779	3,653
Allowance for Doubtful Accounts Receivable	806	806
Property and equipment, accumulated depreciation	$ 28,799	$ 27,736
Common Stock, Shares, Outstanding	13,149	13,086