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Short-term Investments	9 Months Ended
Short-term Investments	Sep. 30, 2016
Short-term Investments [Abstract]
Short-term Investments	4. Short-term Investments We held no short-term investments at September 30, 2016, as compared to $35.0 million at December 31, 2015. We classified these investments as available for sale at December 31, 2015.

The entire disclosure for investments in certain debt and equity securities.