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Income Taxes Income Taxes (Tables)
12 Months Ended
Dec. 31, 2017
Income Tax Disclosure [Abstract]  
Provision for 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

Deferred Tax Assets and Liabilities
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
)
Effective Income Tax Rate Reconciliation
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
 %