XML 66 R54.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Acquisition of Gordon Trucking, Inc. Acquisition pro forma information (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2013 USD ($)
Acquisition of Gordon Trucking, Inc. [Abstract] |
Business Acquisition, Pro Forma Revenue | $ 961,525
Business Acquisition, Pro Forma Net Income (Loss) | $ 90,821

X
- Definition Acquisition of Gordon Trucking, Inc. [Abstract] + References No definition available. + Details
Name: | htld_AcquisitionofGordonTruckingInc.Abstract
Namespace Prefix: | htld_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration