Subsequent Events (Details) (USD $)	1 Months Ended
	Apr. 30, 2012 acre	Apr. 05, 2012
Subsequent Events [Abstract]
Line of credit facility, previous borrowing capacity		$ 225,000,000
Line of credit facility, current borrowing capacity		250,000,000
Acquisition of land, area, in acres	22
Payment to acquire land	$ 215,000