Note 11 - Employee Benefit Plans	12 Months Ended
Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	11. Employee Benefit Plans The Company sponsors the USA Truck, Inc. Employees’ Investment Plan, a tax deferred savings plan under section 401(k) of the Internal Revenue Code that covers substantially all team members. Team members can contribute up to 50.0% of their compensation, subject to statutory limits, with the Company matching 50.0% of the first 4.0% of compensation contributed by each team member. Team members’ rights to employer contributions vest after three years from their date of employment. Effective April 1, 2009, the Company suspended its contribution match.

Note 11 - Employee Benefit Plans

12 Months Ended

Dec. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

11. Employee Benefit Plans

The Company sponsors the USA Truck, Inc. Employees’ Investment Plan, a tax deferred savings plan under section 401(k) of the Internal Revenue Code that covers substantially all team members. Team members can contribute up to 50.0% of their compensation, subject to statutory limits, with the Company matching 50.0% of the first 4.0% of compensation contributed by each team member. Team members’ rights to employer contributions vest after three years from their date of employment. Effective April 1, 2009, the Company suspended its contribution match.