XML 60 R41.htm IDEA: XBRL DOCUMENT v3.8.0.1
Hedges and Derivative Financial Instruments - Narrative (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2017
USD ($)
contract
Dec. 31, 2016
USD ($)
contract
General Discussion of Derivative Instruments and Hedging Activities [Abstract]    
Number of interest rate derivatives held (in contracts) | contract 0 0
Net hedge ineffectiveness gain (loss) $ 0 $ 0
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months $ 0