Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Details)

v3.8.0.1
Derivative Financial Instruments (Details)
$ in Millions
3 Months Ended
Mar. 31, 2018
USD ($)
Mar. 31, 2016
derivative_instrument
Reclassification out of AOCI    
Derivative [Line Items]    
Cash flow hedge gain (loss) to be reclassified within twelve months $ (0.9)  
Interest rate swap agreements    
Derivative [Line Items]    
Number of derivative instruments | derivative_instrument   2
Blended fixed interest rate percentage   0.89%
Contract termination value $ 1.5