Revenue Earning Equipment (Details Textual) - USD ($)	6 Months Ended
Jun. 30, 2017	Dec. 31, 2016
Revenue Earning Equipment [Line Items]
Net investment in direct financing and sales-type leases	$ 439,000,000	$ 409,000,000
Direct financing leases and other assets	$ 0	$ 0
Trucks \| Minimum
Revenue Earning Equipment [Line Items]
Lease term	3 years
Trucks \| Maximum
Revenue Earning Equipment [Line Items]
Lease term	7 years
Trailers \| Maximum
Revenue Earning Equipment [Line Items]
Lease term	10 years

The net amount due as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing and sales-type leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs on direct financing leases; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738

Name:	us-gaap_NetInvestmentInDirectFinancingAndSalesTypeLeases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant