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Interest Rate Swap Agreements (Narrative) (Details)
$ in Millions
Sep. 30, 2015
USD ($)
counterparties
Interest rate swaps, Current  
Derivative [Line Items]  
Notional amount $ 170.0
Number of counterparties | counterparties 3
Fixed rate 2.665%
LIBOR | Interest rate swaps, Current  
Derivative [Line Items]  
Floor interest rate 1.25%
Reclassification out of Accumulated Other Comprehensive Income  
Derivative [Line Items]  
Interest reclassified $ 2.4