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Fair Value of Financial Instruments (Tables)
12 Months Ended
Jun. 30, 2013
Fair Value Disclosures [Abstract]  
Summary of Financial Assets Measured at Fair Value on Recurring Basis
The following table summarizes the Company’s financial assets measured at fair value on a recurring basis at June 30, 2013:
 
Fair Value Measurements
 
June 30, 2013
 
Level 1
 
Level 2
 
Level 3
Assets:
 
 
 
 
 
 
 
U.S. Treasury bills and money market funds
$
27,023

 
$
27,023

 
$

 
$

Operating cash
$
12,103

 
$
12,103

 
$

 
$

Restricted cash
546

 
546

 

 

Total
$
39,672

 
$
39,672

 
$

 
$

The following table summarizes the Company’s financial assets measured at fair value on a recurring basis at June 30, 2012: 

 
Fair Value Measurements
 
June 30, 2012
 
Level 1
 
Level 2
 
Level 3
Assets:
 
 
 
 
 
 
 
U.S. Treasury bills and money market funds
$
97,049

 
$
97,049

 
$

 
$

Operating cash
18,915

 
18,915

 
$

 
$

Restricted cash
3,281

 
3,281

 

 

Total
$
119,245

 
$
119,245

 
$

 
$

Fair Value of Contingent Consideration, Whose Fair Values Were Determined by Level 3 Inputs
The following table provides a rollforward of the fair value of the contingent consideration, whose fair values were determined by Level 3 inputs: 
 
Fair Value
Balance at June 30, 2011
$
4,854

Recognition of accretion expense in operating expenses
84

Change in the fair value of the liability related to the LNX earn-out
(4,938
)
Balance at June 30, 2012 and 2013
$