Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Narrative) (Details)

v3.5.0.2
Derivative Financial Instruments (Narrative) (Details) - Designated as Hedging Instrument [Member]
1 Months Ended
Jun. 30, 2016
USD ($)
swaps
Apr. 30, 2016
USD ($)
swaps
Derivative [Line Items]    
Notional amount $ 575,000,000  
Interest Rate Swap Four, Five, Six, & Seven [Member]    
Derivative [Line Items]    
Number of swaps entered into | swaps   4
Fixed interest rate   1.03%
Notional amount   $ 175,000,000
Interest Rate Swap eight & nine [Member]    
Derivative [Line Items]    
Number of swaps entered into | swaps 2  
Fixed interest rate 1.41%  
Notional amount $ 250,000,000