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Note 9 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

(in thousands)		2015				2014				2013
Federal, current		$	124			$	(94	)		$	(816	)
Federal, deferred			18,185				12,830				7,560
State, current			426				187				102
State, deferred			3,087				1,851				657
		$	21,822			$	14,774			$	7,503

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

(in thousands)		2015				2014				2013
Computed "expected" income tax expense		$	22,368			$	11,404			$	4,462
State income taxes, net of federal income tax effect			2,237				1,075				421
Per diem allowances			2,329				2,304				2,422
Tax contingency accruals			1,599				(104	)			(496	)
Valuation allowance , net			218				18				684
Tax credits			(7,151	)			(112	)			(250	)
Other, net			222				189				260
Actual income tax expense		$	21,822			$	14,774			$	7,503

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

(in thousands)		2015				2014
Deferred tax assets:
Insurance and claims		$	15,495			$	16,153
Net operating loss carryovers			15,348				18,347
Tax credits			10,585				1,477
Other			4,730				6,086
Deferred fuel hedge			10,947				8,144
Valuation allowance			(1,219	)			(1,001	)
Total deferred tax assets			55,886				49,206
Deferred tax liabilities:
Property and equipment			(125,188	)			(103,186	)
Other			(4,398	)			(2,186	)
Prepaid expenses			(3,281	)			(2,838	)
Total net deferred tax liabilities			(132,867	)			(108,210	)
Net deferred tax liability		$	(76,981	)		$	(59,004	)

Summary of Income Tax Contingencies [Table Text Block]

		2015				2014				2013
Balance as of January 1,		$	995			$	1,060			$	1,563
Increases related to prior year tax positions			1,737				246				-
Decreases related to prior year positions			-				-				-
Increases related to current year tax positions			-				42				24
Decreases related to settlements with taxing authorities			(182	)			(126	)			-
Decreases related to lapsing of statute of limitations			(156	)			(227	)			(527	)
Balance as of December 31,		$	2,394			$	995			$	1,060

X

- Definition

Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

+ References

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