Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Common shares, par value	$ 0.01	$ 0.01
Common shares, shares authorized	100,000,000	100,000,000
Common shares, shares issued	11,125,883	11,110,883
Common shares, shares outstanding	10,589,554	10,574,554
Treasury stock, shares	536,329	536,329