Condensed Consolidated Balance Sheets Parenthetical (USD $)	Mar. 31, 2012	Dec. 31, 2011
CAPITALIZATION:
Common stock, par value	$ 0.521	$ 0.521
Common stock, shares authorized	36,000,000	36,000,000
Common stock, shares issued	18,619,232	18,592,827
Common stock, shares outstanding	18,619,232	18,592,827