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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
Schedule of Unrecognized Tax Benefits
A reconciliation of the total amounts of unrecognized tax benefits is as follows:
 
2017
 
2016
Balance at January 1
$
6,403

 
$
7,579

Reductions of prior period positions

 

Additions for tax positions in prior period

 

(Reductions) additions for tax positions in current period

 

 Balance at March 31
$
6,403

 
$
7,579