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Significant Accounting Policies Short-Term Marketable Securities (Policies)
12 Months Ended
Dec. 31, 2015
Accounting Policies [Abstract]  
Short-Term Marketable Securities
Short-Term Marketable Securities
Short-term marketable securities include investment-grade time deposits, commercial paper and government securities with maturities greater than three months but less than twelve months. These securities are classified as available-for-sale and are carried at fair value with net unrealized gains and losses reported as a component of accumulated other comprehensive loss, which is a component of stockholders’ equity. The cost of securities is determined based upon the average cost of the securities sold.