Related Party Transactions (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013
West Central
Related Party Transaction (Textual) [Abstract]
Annual land lease cost	$ 1
Lease Agreements
Related Party Transaction (Textual) [Abstract]
Agreement initial term	20 years
Additional renewal period	30 years

Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration