Consolidated Balance Sheets (Except Share Data) (Parentheticals) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Allowance for doubtful accounts, respectively (in Dollars)	$ 151	$ 150
Preferred stock par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	10,463,255	10,464,505
Treasury stock, at cost, shares, respectively	98,649	119,029