The amount of cash paid for the debt assumed in a business acquisition.

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The cash payment related to IRC Section 338(h)(10) in a business acquisition.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Note 12 - Acquisition of Landair Holdings, Inc. (Details Textual) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jul. 03, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Labor and Related Expense		$ 86,249	$ 60,732	$ 211,621	$ 178,639
Operating Expenses, Total		227,122	169,590	576,516	488,389
Depreciation, Depletion and Amortization, Nonproduction, Total				56,370	54,489
Income Tax Expense (Benefit), Total		$ 4,249	2,985	9,716	3,530
Adjustment for Sale Bonuses and Non-recurring Compensation [Member]
Labor and Related Expense				(2,100)
Acquisition-related Costs [Member]
Operating Expenses, Total				3,400
Adjustments Related to Changes in Useful Life of Intangible and Fair Value of Property and Equipment [Member]
Depreciation, Depletion and Amortization, Nonproduction, Total			600	1,100	1,700
Adjustments Related to Financing Obtained by the Company and Extinguishment of Debt Held by Acquiree [Member]
Interest Expense, Total			$ 1,000	2,000	$ 3,000
Adjustments for Tax Effect of Pro Forma Adjustments and Depreciation Expense [Member]
Income Tax Expense (Benefit), Total				$ 100
Landair Holdings Inc [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Payments to Acquire Businesses, Gross	$ 91,200
Payments to Acquire Businesses, Gross Payment of Debt	15,500
Payments to Acquire Businesses, IRC Section 338(h)(10)	8,200
Business Combination, Consideration Transferred, Total	106,700
Cash Acquired from Acquisition	$ 754