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Income Taxes (Tables)
 6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit)
The provision (benefit) for income taxes consists of the following:

 
Three months ended
 
Six months ended
 
June 30,
2017
 
June 30,
2016
 
June 30,
2017
 
June 30,
2016
 
(in thousands)
Current
$
6,326

 
$
8,371

 
$
9,917

 
$
14,867

Deferred
(356
)
 
(821
)
 
364

 
(1,851
)
 
$
5,970

 
$
7,550

 
$
10,281

 
$
13,016
Schedule of Effective Income Tax Rate Reconciliation
The reconciliation of the Federal statutory income tax rate to the effective income tax rate is as follows:

 
Three months ended
 
Six months ended
 
June 30,
2017
 
June 30,
2016
 
June 30,
2017
 
June 30,
2016
Federal statutory rate
35.0
 %
 
35.0
 %
 
35.0
 %
 
35.0
 %
State income taxes, net of Federal benefit
4.5

 
4.9

 
4.0

 
5.0

Domestic manufacturing deduction
(3.1
)
 
(3.5
)
 
(3.0
)
 
(3.5
)
Excess tax benefits
(4.8
)
 
(1.7
)
 
(5.8
)
 
(2.9
)
Other
(1.4
)
 
(0.8
)
 
(0.2
)
 
(0.5
)
Effective tax rate
30.2
 %
 
33.9
 %
 
30.0
 %
 
33.1
 %