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Fair Value Measurements (Tables)
 3 Months Ended
Feb. 28, 2015
Fair Value Disclosures [Abstract]  
Fair Value Measurements within the Fair Value Hierarchy of the Financial Assets
The following table details the fair value measurements within the fair value hierarchy of our financial assets and liabilities at February 28, 2015 (in thousands):
 
 
 
 
Fair Value Measurements Using
 
Total Fair
Value
 
Level 1
 
Level 2
 
Level 3
Assets
 
 
 
 
 
 
 
Money market funds
$
42,878

 
$
42,878

 
$
—

 
$
—

State and municipal bond obligations
24,129

 
—

 
24,129

 
—

Foreign exchange derivatives
(1,798
)
 
—

 
(1,798
)
 
—

Liabilities
 
 
 
 
 
 
 
Contingent consideration
$
(1,615
)
 
$
—

 
$
—

 
$
(1,615
)

The following table details the fair value measurements within the fair value hierarchy of our financial assets and liabilities at November 30, 2014 (in thousands):
 
 
 
 
Fair Value Measurements Using
 
Total Fair
Value
 
Level 1
 
Level 2
 
Level 3
Assets
 
 
 
 
 
 
 
Money market funds
$
67,893

 
$
67,893

 
$
—

 
$
—

State and municipal bond obligations
20,186

 
—

 
20,186

 
—

Foreign exchange derivatives
(102
)
 
—

 
(102
)
 
—

Liabilities
 
 
 
 
 
 
 
Contingent consideration
$
(1,717
)
 
$
—

 
$
—

 
$
(1,717
)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
The following table reflects the activity for our liabilities measured at fair value using Level 3 inputs for each period presented (in thousands):

 
Three Months Ended
 
February 28,
2015
 
February 28,
2014
Balance, beginning of period
$
1,717

 
$
388

Changes in fair value of contingent consideration obligation
(102
)
 
5

Balance, end of period
$
1,615

 
$
393