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Product Warranty Costs (Tables)
 6 Months Ended
Jun. 30, 2015
Product Warranties Disclosures [Abstract]  
Reconciliation of Changes in Product Warranty Liability
A reconciliation of the changes in the Company’s product warranty liability is as follows (in thousands): 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
Balance at the beginning of the period
$
2,661

 
$
3,100

 
$
2,614

 
$
3,090

Warranty expense(1)
1,254

 
(150
)
 
1,721

 
542

Warranty claims settled
(748
)
 
(445
)
 
(1,168
)
 
(1,127
)
Balance at the end of the period
$
3,167

 
$
2,505

 
$
3,167

 
$
2,505

 
 
 
 
 
(1) 
Includes an additional reserve estimate of $0.2 million relating to the expected product replacement costs from the Company's voluntary recall of certain lots of OmniPods in response to the warning letter received from the U.S. Food and Drug Administration (FDA) for the three and six months ending June 30, 2015.
 
As of
 
June 30,
2015
 
December 31,
2014
Composition of balance:
 
 
 
Short-term
$
1,566

 
$
981

Long-term
1,601

 
1,633

 
$
3,167

 
$
2,614