Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Recurring) (Details)

v3.10.0.1
Fair Value Measurements (Recurring) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Fair Value, Inputs, Level 1, 2 and 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets $ 9,440 $ 5,533
Total liabilities   188
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 0 0
Total liabilities   0
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 9,440 5,533
Total liabilities   188
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 0 0
Total liabilities   0
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest rate swaps (prepaids and other assets) 9,440 5,533
Interest rate swaps (other liabilities)   188
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest rate swaps (prepaids and other assets) 0 0
Interest rate swaps (other liabilities)   0
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest rate swaps (prepaids and other assets) 9,440 5,533
Interest rate swaps (other liabilities)   188
Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest rate swaps (prepaids and other assets) $ 0 0
Interest rate swaps (other liabilities)   $ 0