Income Taxes (Tables)
3 Months Ended
Mar. 31, 2013
Income Taxes  
Schedule of change in unrecognized tax benefits

The changes in uncertain tax positions for the three months ended March 31, 2013 and 2012 were as follows (in thousands):

 

 

 

Three Months Ended March 31,

 

 

 

2013

 

2012

 

Balance at beginning of period

 

$

3,797

 

$

100

 

Additions for tax positions related to prior periods

 

835

 

—

 

Balance at end of period

 

$

4,632

 

$

100