6. Investments

The components of the Company’s investments are as follows:


	June 30,		December 31,
	2014		2013
U.S. non-qualified deferred compensation plan	$	14,112	$	13,232
Warrants and equity securities		627		616

Total	$	14,739	$	13,848

The Company’s U.S. non-qualified deferred compensation plan consists primarily of U.S. marketable securities and mutual funds, all of which are valued using Level 1 inputs (See Note 7, Fair Value Measurements). The aggregate cost basis for these investments was $10.3 million and $9.9 million as of June 30, 2014 and December 31, 2013, respectively.