Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Details - Cash and Investments (Details 1)

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Balance Sheet Details - Cash and Investments (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]        
Cash and cash equivalents $ 89,121 $ 81,086   $ 67,956
Short-term restricted cash 615 614    
Long-term restricted cash 1,502 1,196    
Cash, cash equivalents and restricted cash 91,238 82,896 $ 76,840  
Short-term investments, available-for-sale 63,637 47,918    
Long-term investments, available-for-sale 0 5,991    
Investments and Cash $ 154,875 $ 136,805