4. INVESTMENTS

At December 31, 2021 and December 31, 2020, the Company had the following investments:

		December 31, 2021			December 31, 2020
Marketable securities	$	9,226		$	14,717
Warrants		180			636
Private company investments		11,124			10,273
Total Investments		20,530			25,626
Less: current portion		(15,391	)		(16,755	)
Non-current portion	$	5,139		$	8,871

During the year ended December 31, 2021, the Company recognized $559 (2020 - $526) in interest income on its investment in Ensero Holdings, Inc., a privately-held Delaware corporation, and $79 (2020 - $84) in dividend income related to certain marketable securities, both of which have been included in revenue and other income.

During the year ended December 31, 2021, the Company increased its interest in Rawhide Acquistion Holding, LLC ("RAH" or "Rawhide"), a privately-held Delaware company to 38.07% and now accounts for RAH under IAS 28 - Investment in Associates and Joint Ventures (Note 7).

The Company also received investments as proceeds related to various property deals during the year ended December 31, 2021.