FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2015

Financial assets and liabilities measured at fair value on a recurring basis

As of June 30, 2015 and December 31, 2014, assets and liabilities measured at fair value consisted of the following (in thousands):



	June 30, 2015						December 31, 2014
	Fair Value Measurements Using Input Types						Fair Value Measurements Using Input Types
	Level 2		Level 3		Total		Level 2		Level 3		Total
Assets:
Derivative assets	$	1,111	$	—	$	1,111	$	1,258	$	—	$	1,258
Non-marketable securities	—		3,698		3,698		—		3,384		3,384
Total assets	$	1,111	$	3,698	$	4,809	$	1,258	$	3,384	$	4,642
Liabilities:
Derivatives liabilities	$	433	$	—	$	433	$	—	$	—	$	—

Fair value of non-marketable securities

The following table summarizes the change in the fair value of the Company's non-marketable securities during the six months ended June 30, 2015 (in thousands).



Balance as of December 31, 2014	$	3,384
Sales	—
Realized gains	54
Unrealized gains	260
Balance as of June 30, 2015	$	3,698