Interim Consolidated Balance Sheets Parenthetical (USD $)	Jun. 30, 2011	Dec. 31, 2010
Stockholders' equity:
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	11,898,529	11,872,479
Common stock, shares outstanding	11,898,529	11,872,479
Treasury stock, shares	42,600.00	42,600.00