Income Taxes

The provision for income taxes for the years ended December 31, 2017, 2016 and 2015, consists of the following (in thousands):



	2017			2016			2015
Current provision:
Federal	$	3,074		$	4,280		$	6,440
State	260			429			523
Total current provision	3,334			4,709			6,963
Deferred provision:
Federal benefit	(21,582		)	(2,713		)	(1,846		)
Total deferred benefit	(21,582		)	(2,713		)	(1,846		)
Total (benefit) provision	$	(18,248	)	$	1,996		$	5,117

On December 22, 2017, the U.S. government enacted the 2017 Tax Act. The 2017 Tax Act makes broad and complex changes to the U.S. tax code that affects the Company’s 2017 financial results. The 2017 Tax Act also establishes new tax laws that will affect the Company’s financial results after 2017, including a reduction in the U.S. federal corporate income tax rate from 35 percent to 21 percent; additional limitations on the deductibility of executive compensation; limitations on the deductibility of interest; and repeal of the domestic manufacturing deduction. As such, the Company recognized a $18.4 income tax benefit related to the re-measurement of our deferred tax assets and liabilities in our 2017 financial statements in accordance with SAB 118, which provides SEC staff guidance for the application of ASC 740 in the reporting period in which the 2017 Tax Act was signed into law. As we do not have all of the necessary information to analyze all income tax effects of the 2017 Tax Act, we will continue to evaluate tax reform and adjust the provisional amounts as additional information is obtained. We expect to complete our detailed analysis no later than the fourth quarter of 2018.

The income tax effects of temporary differences that give rise to significant portions of deferred income tax assets and (liabilities) as of December 31, 2017 and 2016, are as follows (in thousands):



	2017			2016
Deferred income tax assets:
Stock Compensation	$	843		$	664
Other	201			84
Total deferred income tax assets	$	1,044		$	748
Deferred income tax liabilities:
Property and equipment	$	(32,377	)	(53,120		)
Goodwill and other intangible assets	(604		)	(973		)
Other	(226		)	(400		)
Total deferred income tax liabilities	(33,207		)	(54,493		)
Net deferred income tax liabilities	$	(32,163	)	$	(53,745	)

The effective tax rate for the years ended December 31, 2017, 2016 and 2015, differs from the statutory rate as follows:



	2017		2016		2015
Statutory rate	34.0	%	34.0	%	34.0	%
State and local taxes	1.5	%	1.6	%	1.5	%
Domestic production credit	(14.3	)%	(5.4	)%	(3.6	)%
Permanent stock differences	(13.4	)%	0.3	%	1.1	%
Other	(1.5	)%	(6.9	)%	0.5	%
Effective rate prior to tax act	6.3	%	23.6	%	33.5	%
Deferred re-measurement for rate change	(1,144.4	)%	—	%	—	%
Effective rate	(1,138.1	)%	23.6	%	33.5	%

Our policy regarding income tax interest and penalties is to expense those items as general and administrative expense. During the years ended December 31, 2017, 2016 and 2015, there were no significant income tax interest or penalty items in the statement of income.

We file income tax returns in the U.S. federal jurisdiction and various state jurisdictions. With few exceptions, we are no longer subject to U.S. federal or state income tax examination by tax authorities for years before 2013.