CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parentheticals) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended								12 Months Ended
	Nov. 29, 2011	Feb. 27, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Common Stock, Dividends, Per Share, Declared	$ 0.18	$ 0.21	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.72	$ 0.72	$ 0.72