6. Investments

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


	September 30, 2013		December 31, 2012
U.S. non-qualified deferred compensation plan	$	12,729	$	11,401
Warrants and equity securities		453		501

Total	$	13,182	$	11,902

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 $9.9 million and $9.3 million as of September 30, 2013 and December 31, 2012, respectively. The warrants and equity securities primarily consist of cost method investments, none of which were evaluated for impairment since there were no triggering events in the respective periods.