Consolidated Balance Sheets Parenthetical Statement (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Available-for-sale investments, at quoted market value, cost	$ 2,232	$ 2,204
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	8,562,633	8,562,633
Common stock, shares outstanding	8,562,633	8,562,633