XML 18 R6.htm IDEA: XBRL DOCUMENT v3.8.0.1
Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Statement of Comprehensive Income [Abstract]        
Gain on cash flow hedges, tax expense $ 0 $ 0 $ 0 $ 175