Investments

The investment balances at September 30, 2018 and December 31, 2017, consisted of the following:



(in thousands)	September 30, 2018		December 31, 2017
Rabbi trust (associated with the Deferred Compensation Plan)	$	7,929	$	6,734
Investments in equity securities	22		22
Total	$	7,951	6,756

We classify these investments as trading securities and report them at their fair value. For the three months ended September 30, 2018 and 2017, we recorded a net unrealized gain of approximately $313,000 and $261,000, respectively, in other expense, net in the condensed consolidated statements of income related to these investments. For the nine months ended September 30, 2018 and 2017, we recorded a net unrealized gain of approximately $426,000 and $694,000, respectively, in other expense, net in the condensed consolidated statements of income related to these investments. For the investment in the Rabbi Trust, we also have recorded an associated liability, which is included in other pension and benefit costs in the consolidated balance sheets and is adjusted each period for the gains and losses incurred by the investments in the Rabbi Trust.