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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense

The following table presents components of income tax expense for the three and nine months ended September 30, 2017 and 2016:

  Three months ended
September 30,
Nine months ended
September 30,
(in thousands) 2017 2016 2017 2016
Income tax based on income from continuing operations, at estimated tax rates of 36.4% and 37.5%, respectively $6,935  $7,838  $14,420  $21,545 
Provision for change in estimated tax rates 741  (424) -  - 
Income tax before discrete items 7,676  7,414  14,420  21,545 
             
Discrete tax expense:            
Provision for/resolution of tax audits and contingencies, net -  -  961  (825)
Adjustments to prior period tax liabilities (73) (11) 606  (254)
Other discrete tax adjustments, net (7) 85  (62) 113 
Provision for/adjustment to beginning of year valuation allowance (3,787) -  (3,787) - 
Enacted tax legislation -  -     34 
Total income tax expense $3,809  $7,488  $12,138  $20,613