Condensed Consolidated Balance Sheets Parenthetical (USD $)	Jun. 30, 2011	Dec. 31, 2010
CAPITALIZATION:
Common stock, par value	$ 0.521	$ 0.521
Common stock, shares authorized	36,000,000	36,000,000
Common stock, shares issued	18,577,510	18,551,540
Common stock, shares outstanding	18,577,510	18,551,540