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	—		198		519		717
Balance as of March 31, 2019	$	—	$	94,703	$	345,466	$	440,169

Based on the closing price of a share of our common stock as of March 31, 2019, our market capitalization had declined to 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 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. After the impairment, Power Solutions reported a goodwill balance of $94.5 million at December 31, 2018. Given the carrying value of the Power Solutions reporting unit 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 reporting unit falls short of expected results, additional material impairment charges may be required. During the first quarter of 2019, we reassessed the relevant facts and circumstances and concluded there was no impairment during the period. We will continue to monitor and assess Power Solutions during 2019.