|12 Months Ended|
Dec. 31, 2017
|Operating Leases [Abstract]|
|Leases of Lessee Disclosure [Text Block]||
The Company leases certain facilities under noncancellable operating leases that expire in various years through 2025. Certain leases may be renewed for periods varying from one to ten years. The Company has entered into or assumed through acquisition several operating leases for tractors, straight trucks and trailers with original lease terms between three and five years. These leases expire in various years through 2023 and may not be renewed beyond the original term.
Sublease rental income, was $1,923, $1,517 and $1,611 in 2017, 2016 and 2015, respectively. In 2018, the Company expects to receive aggregate future minimum rental payments under noncancellable subleases of approximately $1,206. Noncancellable subleases expire between 2018 and 2021.
Future minimum rental payments under noncancellable operating leases with initial or remaining terms in excess of one year consisted of the following at December 31, 2017:
The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.
Reference 1: http://www.xbrl.org/2003/role/presentationRef