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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2015
Equity [Abstract]  
Schedule of Repurchase Agreements
The Company had the following open-market share purchase activity, exclusive of purchase and administrative costs (in thousands, except per share data):
 
Total Number of Shares Purchased
 
Average Price Paid per Share
 
Total Cost
Year ended December 31, 2015
551

 
$
14.01

 
$
7,713

Year ended December 31, 2014
2,289

 
$
16.85

 
$
38,558

Year ended December 31, 2013
418

 
$
23.95

 
$
9,990
Summary of Components of Accumulated Other Comprehensive Income
The following table provides information about activity in other comprehensive income (in thousands):
 
Unrealized gain (loss) on investments
 
Foreign currency translation adjustment
 
Unrealized gain (loss) on derivative instrument
 
Total
Balance as of December 31, 2012
$
(10
)
 
$
—

 
$
(266
)
 
$
(276
)
Other comprehensive income
10

 
—

 
266

 
276

Balance as of December 31, 2013
—

 
—

 
—

 
—

Other comprehensive loss
(1,113
)
 
—

 
—

 
(1,113
)
Balance as of December 31, 2014
(1,113
)
 
—

 
—

 
(1,113
)
Other comprehensive income (loss)
1,103

 
(517
)
 
—

 
586

Balance as of December 31, 2015
$
(10
)
 
$
(517
)
 
$
—

 
$
(527
)