Goodwill

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



	Mobile Solutions		Power Solutions		Life Sciences			Total
Balance as of December 31, 2018	$	—	$	94,505	$	344,947		$	439,452
Currency impacts/Other	—		196		(16		)	180
Balance as of June 30, 2019	$	—	$	94,701	$	344,931		$	439,632

Based on the closing price of a share of our common stock as of June 30, 2019, our market capitalization was in excess of the net book value of our stockholders’ equity. Subsequent to June 30, 2019, our market capitalization declined to a level 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 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 second 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. We will continue to monitor and assess Power Solutions during 2019.