Sale and Leaseback Transaction (Details) (USD $)	0 Months Ended	1 Months Ended		6 Months Ended
	Feb. 22, 2012	Jun. 30, 2012	Aug. 28, 2007	Jun. 30, 2012
Sale and Leaseback Transaction [Abstract]
Gross proceeds	$ 59,000,000
Repayments of debt from proceeds of sale and leaseback transaction	54,500,000
Lease term	10 years		10 years
Deferred gain on sale	14,900,000		1,400,000
Net gain due to early buy-out		430,000		430,000
Unrecognized gain from 2007 sale leaseback transaction				710,000
Sale Leaseback Transaction, Other Payments Required		$ 280,000