v3.7.0.1
Income Taxes (Tables)
3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
Reconciliation of Federal Tax Rate and Actual Income Tax Expense
The sources and tax effects of the differences are as follows:
 
Three Months Ended March 31,
 
2017
 
2016
U.S. federal statutory tax rate
35.0
 %
 
35.0
 %
State income taxes, net of federal tax benefit
1.4

 
2.9

General business credits
(1.0
)
 
(2.6
)
Employee stock-based compensation
(1.0
)
 
0.5

Other
0.5

 
1.0

Effective tax rate
34.9
 %
 
36.8
 %

Summary of Income Tax Contingencies
The reconciliation of the beginning unrecognized tax benefits balance to the ending balance is as follows:
 
Three Months Ended March 31,
 
2017
 
2016
 
(In thousands)
Beginning balance
$
7,314

 
$
7,371

Increases related to positions taken during prior years

 

Increases related to positions taken during the current year
1,038

 
889

Decreases related to positions settled with tax authorities

 

Decreases as a result of a lapse of applicable statute of limitations
$

 
$

Ending balance
$
8,352

 
$
8,260

 
 
 
 
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate
$
8,352

 
$
8,260