Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Measurement Hierarchy (Details)

v3.6.0.2
Fair Value Measurements - Measurement Hierarchy (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swaps (prepaids and other assets) $ 3,993,000  
Total assets 3,993,000  
Interest rate swaps (other liabilities)   $ (616,000)
Total liabilities   (616,000)
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swaps (prepaids and other assets) 0  
Total assets 0  
Interest rate swaps (other liabilities)   0
Total liabilities   0
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swaps (prepaids and other assets) 3,993,000  
Total assets 3,993,000  
Interest rate swaps (other liabilities)   (616,000)
Total liabilities   (616,000)
Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swaps (prepaids and other assets) 0  
Total assets $ 0  
Interest rate swaps (other liabilities)   0
Total liabilities   $ 0