GOODWILL

Our Goodwill represents the amount by which our purchase price for the HNZ Offshore Business exceeded the fair value of net assets acquired. Goodwill has an indefinite useful life and is not amortized. We test goodwill for impairment annually as of October 1st or when events or changes in circumstances indicate that a potential impairment exists.

Goodwill of $61.3 million as of September 30, 2018 and December 31, 2017 was as follows:



	Oil & Gas		Air Medical	Technical Services	Total
Balance December 31, 2017	$	61,299	—	—	$	61,299
Activity	—		—	—	—
Balance September 30, 2018	$	61,299	—	—	$	61,299