Goodwill

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



	Mobile Solutions			Power Solutions			Life Sciences			Total
Balance as of December 31, 2017	$	74,147		$	201,881		$	178,584		$	454,612
Currency impacts	(439		)	(384		)	(1,847		)	(2,670		)
Goodwill acquired in acquisitions	—			—			165,454			165,454
Adjustments to goodwill	—			—			418			418
Balance as of June 30, 2018	$	73,708		$	201,497		$	342,609		$	617,814

The goodwill acquired in 2018 is related to the Paragon Medical and Bridgemedica acquisitions as described in Note 3 and is derived from the value of the businesses acquired. We recorded $157.4 million of goodwill related to the Paragon Medical acquisition and $8.0 million of goodwill related to the Bridgemedica acquisition during the six months ended June 30, 2018. We are in the process of analyzing the opening balance sheets and purchase price allocations for these acquisitions. The preliminary fair value of the businesses acquired was based on management business plans and future performance estimates which are subject to a high degree of management judgment and complexity. Actual results may differ from these projections and the differences may be material, leading to measurement period adjustments of this goodwill.

In the first quarter of 2018, as a result of the changes in our organizational and management structure, goodwill was reassigned to operating segments using a relative fair value allocation. For further information on the organizational changes, see Note 1.