Goodwill

The following table shows changes in the carrying amount of goodwill by reportable segment.



	Life Sciences			Power Solutions			Total
Balance as of December 31, 2018	$	344,947		$	94,505		$	439,452
Currency impacts/Other	(1,970		)	(202		)	(2,172		)
Balance as of September 30, 2019	$	342,977		$	94,303		$	437,280

In 2018, Mobile Solutions recorded an impairment loss on goodwill. As of September 30, 2019, no goodwill was recorded at Mobile Solutions.

Based on the closing price of a share of our common stock as of September 30, 2019, our market capitalization was at a level that is less than the net book value of our stockholders’ equity. A prolonged or significant decline in market capitalization could be an indicator of additional goodwill impairment. We concluded that our market capitalization as of September 30, 2019, was not at a level that would require us to perform a goodwill impairment assessment during the period. We will continue to monitor our market capitalization to determine if an indicator of impairment exists in subsequent periods.

During 2018, as a result of our annual goodwill impairment analysis performed during the fourth quarter of 2018, we recorded an impairment of $109.1 million in our Power Solutions group. Subsequent to the impairment, at December 31, 2018, Power Solutions reported a goodwill balance of $94.5 million. Given the carrying value of the Power Solutions group was equal to its fair value at December 31, 2018, as a result of the 2018 goodwill impairment, if actual performance of the Power Solutions group falls short of expected results, additional material impairment charges may be required. During the third quarter of 2019, we assessed for triggering events that would signify the need to perform an impairment test and concluded there were no triggering events during the period. Our annual impairment analysis will be completed as of October 1, 2019.