Flooding (Details) (Flooding)	3 Months Ended	6 Months Ended	0 Months Ended	3 Months Ended		0 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	0 Months Ended
	Oct. 23, 2011 item	Oct. 23, 2011 item	Apr. 30, 2011 Davenport, Iowa	Jul. 24, 2011 Davenport, Iowa	Apr. 24, 2011 Davenport, Iowa	May 12, 2011 Caruthersville, Missouri	Jun. 02, 2011 Lula, Mississippi - property 1	Sep. 01, 2011 Lula, Mississippi - property 2	Jun. 16, 2011 Natchez, Mississippi	May 26, 2011 Vicksburg, Mississippi
Flooding
Number of properties closed due to flooding	5	5
Number Days Closed			15 days	6 days	9 days	12 days	31 days	91 days	41 days	16 days