Equity (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended
	Apr. 17, 2013	Mar. 31, 2013	Mar. 31, 2012
Equity [Abstract]
Common stock dividend	$ 0.83	$ 0.83	$ 0.83
Parent Company [Member]
Equity [Abstract]
Shares, Issued		288,420