XML 30 R18.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Profit Sharing Plan and Retirement Plan | 12 Months Ended
--- | ---
Dec. 31, 2015
Profit Sharing Plan and Retirement Plan [Abstract] |
Profit Sharing Plan and Retirement Plan | Profit Sharing Plan and Retirement Plan We have retirement savings plans (the “Plans”) for substantially all employees who have completed one year of service and are 19 years of age or older. Employees may make 401(k) contributions subject to Internal Revenue Code limitations. The Plans provide for a discretionary profit sharing contribution to non-driver employees and a matching contribution of a discretionary percentage to driver employees (Heartland Plan) and discretionary matching contributions to driver and non-driver employees (GTI Plan). Our profit sharing contributions totaled approximately $2.1 million, $2.1 million, and $0.4 million, for the years ended December 31, 2015, 2014 and 2013, respectively.

X
- Definition Profit Sharing Plan and Retirement Plan [Abstract] + References No definition available. + Details
Name: | htld_ProfitSharingPlanAndRetirementPlanAbstract
Namespace Prefix: | htld_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References No definition available. + Details
Name: | us-gaap_CompensationAndEmployeeBenefitPlansTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration