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Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Investments All Other Investments [Abstract]

Cash Equivalents, Restricted Cash and Short-Term Investments Classified as Available-for-sale Securities

Cash equivalents, restricted cash and short-term investments which are classified as available-for-sale securities, consisted of the following (in thousands):

September 30, 2018		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Estimated Fair Value
Money market funds (cash equivalents)		$	22,213			$	—			$	—			$	22,213
U.S. government agency securities			93,246								(23	)			93,223
Agency securities			13,649				—				(1	)			13,648
Restricted cash (money market funds)			50				—				—				50
Total financial assets		$	129,158			$	—			$	(24	)		$	129,134
Classified as:
Cash and cash equivalents														$	35,861
Short-term investments															93,223
Restricted cash (money market funds)															50
														$	129,134

December 31, 2017		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Estimated Fair Value
Money market funds (cash equivalents)		$	14,334			$	—			$	—			$	14,334
U.S. government agency securities			16,474				—				(3	)			16,471
Restricted cash (money market funds)			5,330				3				—				5,333
Agency securities			1,500				—				—				1,500
Total financial assets		$	37,638			$	3			$	(3	)		$	37,638
Classified as:
Cash and cash equivalents														$	14,334
Short-term investments															17,971
Restricted cash (money market funds)															5,333
														$	37,638

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- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

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+ Details

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- References

No definition available.

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