Fair Value Measurements (Assets and Liabilities Measured at Fair Value on Nonrecurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Fair Value Assets and Liabilities Measured On Nonrecurring Basis [Line Items]    
Assets held for sale $ 787 $ 0
Fair Value, Inputs, Level 1
   
Fair Value Assets and Liabilities Measured On Nonrecurring Basis [Line Items]    
Assets held for sale 150  
Fair Value, Inputs, Level 2
   
Fair Value Assets and Liabilities Measured On Nonrecurring Basis [Line Items]    
Assets held for sale 0  
Fair Value, Inputs, Level 3
   
Fair Value Assets and Liabilities Measured On Nonrecurring Basis [Line Items]    
Assets held for sale $ 637