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			&lt;p style="margin:0pt; page-break-after:avoid"&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; font-weight:bold"&gt;5. Derivative Instruments &lt;/font&gt;&lt;/p&gt;
			&lt;p style="margin:6pt 0pt 0pt"&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;We are exposed to foreign currency exchange rates related to our business operations. To reduce our risks related to these exposures, we utilize certain derivative instruments, namely foreign currency forward contracts. We do not use derivatives for speculative trading purposes. &lt;/font&gt;&lt;/p&gt;
			&lt;p style="margin:12pt 0pt 0pt"&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;We enter into foreign currency forward contracts, none of which are designated as hedging transactions for accounting purposes, to reduce our exposure to foreign currency fluctuations of certain liabilities denominated in foreign currencies. These exposures are hedged on a quarterly basis. As of June&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;&amp;#160;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;30, 2013 and December&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;&amp;#160;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;31, 2012, we had foreign currency forward contracts with notional amounts of &amp;#8364;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;12.0&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;&amp;#160;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;million ($&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;15.6&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; million based on the exchange rate as of June&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;&amp;#160;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;30, 2013) and &amp;#8364;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;16.8&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;million ($&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;22.2&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; million based on the exchange rate as of December&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;&amp;#160;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;31, 2012), respectively, that were not designated as hedges. As of June&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;&amp;#160;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;30, 2013, we recorded a derivative liability within accrued liabilities and other noncurrent liabilities of $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;175,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; and $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;53,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;, respectively, related to these foreign currency forward contracts. As of December&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;&amp;#160;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;31, 2012, we recorded a derivative asset within prepaid expenses and other current assets and other long-term assets of $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;30&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; and $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;21&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;, respectively, related to these foreign currency forward contracts. &lt;/font&gt;&lt;/p&gt;
			&lt;p style="margin:12pt 0pt 0pt"&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;We recorded an unrealized&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; gain of $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;182,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; and&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; an unrealized loss of&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;352,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; in interest and other income (expense), net on our condensed statements of operations related to these foreign currency forward contracts for the three an&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;d six months ended June&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;&amp;#160;&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;30, 2013, respectively. &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;During the three &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;and six &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;months ended &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;June 30,&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; 2013, the Company settled foreign currency forward contracts and recognized a realized &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;gain&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; of $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;83,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;and $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;73,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;, respectively, &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;in interest and other income (expense), net. &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;During the three and six months ended June 30, 2012 we recognized an unrealized loss of $&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;694,000&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; and &lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt; "&gt;no&lt;/font&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt; realized gains or losses.&lt;/font&gt;&lt;/p&gt;
			&lt;p style="margin:12pt 0pt 0pt"&gt;&lt;font style="font-family:&amp;apos;Times New Roman&amp;apos;; font-size:10pt"&gt;Our derivative financial instruments present certain market and counterparty risks. In general, the market risk related to these contracts is offset by corresponding gains and losses on the hedged transactions. The credit risk associated with these contracts is driven by changes in interest and currency exchange rates and, as a result, varies over time. &lt;/font&gt;&lt;/p&gt;
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