XML 70 R55.htm IDEA: XBRL DOCUMENT v3.3.1.900
Debt (Aggregate Borrowing Information) (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Line of Credit Facility [Line Items]    
Unused credit lines $ 308,700,000 $ 291,600,000
Financial Services [Member]    
Line of Credit Facility [Line Items]    
Available credit lines 310,000,000 150,000,000
Unused credit lines $ 42,123,000 $ 9,759,000
Weighted-average interest rate 2.65% 2.70%