Segment Reporting (Details Textual)	9 Months Ended
Sep. 30, 2018 Segments
Segment Reporting (Textual)
Number of reportable segments	2
Description of trucking	Trucking is comprised of domestic freight trucking and surface transportation services to the USPS. The USPS grants four-year contracts through a bid process. The Company has 16 contracts in 12 states.

Description of the types of products and services from which the reportable segment derives its revenue.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599

Name:	us-gaap_DescriptionOfTypesOfProductsAndServicesFromWhichEachReportableSegmentDerivesItsRevenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration