11. Derivative Instruments

The Company uses foreign currency forward contracts to mitigate variability in gains and losses generated from the re-measurement of certain monetary assets and liabilities denominated in foreign currencies and to offset certain operational exposures from the impact of changes in foreign currency exchange rates. These derivatives are carried at fair value with changes recorded in interest income and other income (expense), net in the condensed consolidated statements of operations. Changes in the fair value of these derivatives are largely offset by re-measurement of the underlying assets and liabilities. Cash flows from such derivatives are classified as operating activities. The derivatives have original maturities of approximately 30 days.

The following table summarizes the Company’s outstanding derivative instruments on a gross basis as recorded in its condensed consolidated balance sheets as of September 29, 2018 and December 30, 2017:


	Notional Amounts				Derivative Liabilities
Derivative Instrument	September 29 2018		December 30, 2017		September 29, 2018				December 30, 2017
					Balance Sheet Line		Fair Value		Balance Sheet Line		Fair Value
	(in thousands)
Undesignated Hedges:
Forward Foreign Currency Contracts	$	1,470	$	1,276		^(a)	$	7		^(a)	$	5

Total Hedges	$	1,470	$	1,276			$	7			$	5

(a)	Other accrued liabilities