Consolidated Balance Sheets Parenthetical Statement (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Available-for-sale investments, at quoted market value, cost	$ 2,002	$ 1,980
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	8,362,633	8,360,133
Common stock, shares outstanding	8,362,633	8,360,133