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Valuations and Qualifying Accounts Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts [Table Text Block]
MICREL, INCORPORATED
VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended December 31, 2014, 2013, and 2012
(In thousands)


Description
 
Balance at Beginning
 of Year
 
Allowance Additions or
(Reductions)
 
Returns and Price
Adjustments
 
 
Bad Debt
Write-offs
 
 
Balance at
End of Year
Year Ended December 31, 2014
 
 
 
 
 
 
 
 
 
 
Allowances for OEM and sell-in distributor returns and price adjustments
 
$
737

 
$
1,970

 
$
(1,889
)
 
$
—

 
$
818

Allowances for unclaimed sell-through distributor price adjustments (1)
 
—

 
64,530

 
(64,397
)
 
—

 
133

Allowances for doubtful accounts
 
23

 
114

 
—

 
(30
)
 
107

Total allowances
 
$
760

 
$
66,614

 
$
(66,286
)
 
$
(30
)
 
$
1,058

Year Ended December 31, 2013
 
 

 
 

 
 

 
 

 
 

Allowances for OEM and sell-in distributor returns and price adjustments
 
$
712

 
$
1,954

 
$
(1,929
)
 
$
—

 
$
737

Allowances for unclaimed sell-through distributor price adjustments (1)
 
51

 
77,129

 
(77,180
)
 
—

 
—

Allowances for doubtful accounts
 
49

 
(26
)
 
—

 
—

 
23

Total allowances
 
$
812

 
$
79,057

 
$
(79,109
)
 
$
—

 
$
760

Year Ended December 31, 2012
 
 

 
 

 
 

 
 

 
 

Allowances for OEM and sell-in distributor returns and price adjustments
 
$
1,066

 
$
1,452

 
$
(1,806
)
 
$
—

 
$
712

Allowances for unclaimed sell-through distributor price adjustments (1)
 
169

 
73,674

 
(73,792
)
 
—

 
51

Allowances for doubtful accounts
 
59

 
(10
)
 
—

 
—

 
49

Total allowances
 
$
1,294

 
$
75,116

 
$
(75,598
)
 
$
—

 
$
812


___________
(1) The Company estimates and records an allowance for sell-through distributor price adjustments for which the specific resale transaction has been completed, but the price adjustment claim has not yet been received from the sell-through distributor. This allowance typically represents approximately one to three weeks of unclaimed price adjustments.