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Income Taxes Income Taxes (Tables)
6 Months Ended
Jun. 29, 2013
Unrecognized Tax Benefits [Abstract]  
Unrecognized tax benefits rollforward
The changes in Cadence's gross amount of unrecognized tax benefits during the six months ended June 29, 2013 are as follows:
 
Unrecognized tax benefits
 
(In thousands)
Unrecognized tax benefits as of December 29, 2012
$
92,378

Gross amount of the increases (decreases) in unrecognized tax benefits of tax positions taken during a prior year
1,025

Gross amount of the increases (decreases) in unrecognized tax benefits as a result of tax positions taken during the current year
13,262

Amount of decreases in unrecognized tax benefits relating to settlements with taxing authorities, including the utilization of tax attributes
(13,635
)
Reductions to unrecognized tax benefits resulting from the lapse of the applicable statute of limitations
(12,044
)
Effect of foreign currency translation
155

Unrecognized tax benefits as of June 29, 2013
$
81,141

 
 
Total amounts of unrecognized tax benefits that, if upon resolution of the uncertain tax positions would reduce Cadence's effective tax rate as of June 29, 2013
45,127

Interest and penalties recognized in the condensed consolidated income statements
The total amounts of interest and penalties recognized in the condensed consolidated income statements as provision (benefit) for income taxes for the three and six months ended June 29, 2013 and June 30, 2012 were as follows:
 
Three Months Ended
 
Six Months Ended
 
June 29,
2013
 
June 30,
2012
 
June 29,
2013
 
June 30,
2012
 
(In thousands)
Interest
$
(14
)
 
$
1,194

 
$
(13,459
)
 
$
1,763

Penalties
1,347

 
(6
)
 
(6,959
)
 
(975
)
Interest and penalties recognized in the condensed consolidated balance sheets
The total amounts of gross accrued interest and penalties recognized in the condensed consolidated balance sheets as of June 29, 2013 and December 29, 2012 were as follows:
 
 
As of
 
June 29,
2013
 
December 29,
2012
 
(In thousands)
Interest
$
3,096

 
$
24,427

Penalties
1,964

 
8,953