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GOODWILL AND OTHER INTANGIBLE ASSETS

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS

10. GOODWILL AND OTHER INTANGIBLE ASSETS

There were no changes in the carrying values of goodwill for the nine months ended September 30, 2019.

		Critical Power
		Solutions				Total
		Segment				Goodwill
Gross Goodwill:
Balance as of January 1, 2019		$	2,969			$	2,969
No activity			—				—
Balance as of September 30, 2019		$	2,969			$	2,969

Changes in the carrying values of intangible assets for the nine months ended September 30, 2019, were as follows:

			Critical Power				Total
			Solutions				Intangible
			Segment				Assets
Balance as of January 1, 2019, net			$	124			$	124
Amortization				(31	)			(31	)
Balance as of September 30, 2019, net			$	93			$	93

The components of intangible assets as of September 30, 2019 are summarized below:

		Weighted Average Amortization Years				Gross Carrying Amount				Accumulated Amortization				Net Book Value
Internally developed software			7			$	289			$	(196	)		$	93
Total intangible assets						$	289			$	(196	)		$	93

The amortization of intangible assets expense was $31 and $1.0 million for the nine months ended September 30, 2019 and 2018, respectively.