Condensed Consolidated Balance Sheet (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheet
Trade receivables, allowance for doubtful accounts	$ 9	$ 9
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	3,388,488	3,381,999
Common stock, shares outstanding	3,388,488	3,381,999