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Property and Equipment - Land Sales (Details) (USD $)
In Thousands, unless otherwise specified
1 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Abstract]      
Deferred revenue recognized from prior land sale   $ 648  
Land sale, sale price 4,988    
Land sale revenue     4,340
Gain on land sale   4,058  
Deferred land sale revenue     $ 648