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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]  
Components of Income Tax Expense
The components of income tax expense for the following periods are as follows (in thousands):
 
 
For the three months ended
 
March 31,
 
2018
 
2017
Federal
$

 
$
271

State

 
46

Tax expense (benefit)
$

 
$
317