Related Party Transactions Midland Lease (Details) (USD $) In Thousands, unless otherwise specified				12 Months Ended
	Jun. 01, 2012	Jun. 02, 2011	Mar. 02, 2011	Dec. 31, 2012 Affiliated Entity, Midland Lease	Dec. 31, 2011 Affiliated Entity, Midland Lease	May 15, 2011 Affiliated Entity, Midland Lease
Related Party Transaction
Term of lease from related party						5 years
Office rent to affilate				$ 155	$ 40
The current monthly rent under the lease will increase annually	4.00%	4.00%	3.00%