Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies- Derivative Financial Instruments (Details)

v3.3.0.814
Summary of Significant Accounting Policies- Derivative Financial Instruments (Details) - Interest rate swap instruments
$ in Thousands
 1 Months Ended 3 Months Ended
Sep. 30, 2015
USD ($)
Oct. 31, 2012
USD ($)
swap
Jul. 31, 2011
USD ($)
Mar. 31, 2010
USD ($)
Jun. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Dec. 31, 2007
USD ($)
contract
Derivative [Line Items]              
Number of instruments held (contracts) | contract             2
Interest Rate Swap Contract 1              
Derivative [Line Items]              
Initial notional amount of interest rate swaps             $ 13,081
Interest rate swaps, variable to fixed interest rates (percent)             5.40%
Interest Rate Swap Contract 2              
Derivative [Line Items]              
Initial notional amount of interest rate swaps             $ 3,256
Interest rate swaps, variable to fixed interest rates (percent)             5.30%
Interest Rate Swap Contract 3              
Derivative [Line Items]              
Initial notional amount of interest rate swaps       $ 27,900      
Interest rate swaps, variable to fixed interest rates (percent)       6.99%      
Term of interest rate swap contract       14 years      
Interest expense reclassified from accumulated other comprehensive loss into other expenses, net         $ 566    
Interest Rate Swap Contract 4              
Derivative [Line Items]              
Initial notional amount of interest rate swaps     $ 38,571        
Interest rate swaps, variable to fixed interest rates (percent)     1.965%        
Term of interest rate swap contract     5 years        
Interest Rate Swap Contract 5              
Derivative [Line Items]              
Number of instruments held (contracts) | swap   2          
Initial notional amount of interest rate swaps   $ 16,750          
Interest rate swaps, variable to fixed interest rates (percent)   1.71%          
Term of interest rate swap contract   8 years          
Future increase in notional amount           $ 42,247  
Interest Rate Swap Contract 6              
Derivative [Line Items]              
Number of instruments held (contracts) | swap   2          
Initial notional amount of interest rate swaps   $ 25,377          
Interest rate swaps, variable to fixed interest rates (percent)   3.70%          
Term of interest rate swap contract   8 years          
Interest Rate Swap Contract 7              
Derivative [Line Items]              
Initial notional amount of interest rate swaps $ 20,746            
Interest rate swaps, variable to fixed interest rates (percent) 2.19%            
Term of interest rate swap contract 7 years            
Interest Rate Swap Contract 8              
Derivative [Line Items]              
Initial notional amount of interest rate swaps $ 14,084            
Interest rate swaps, variable to fixed interest rates (percent) 3.26%            
Term of interest rate swap contract 15 years