Impairment of long-lived assets (Notes)

6 Months Ended

Jul. 31, 2018

Tangible Asset Impairment Charges [Abstract]

Impairment of long-lived assets

Impairment of long-lived assets

The Company's assessment of long-lived assets, and other identifiable intangibles is based upon factors that market participants would use in accordance with the accounting guidance for the fair value measurement of assets. The company will continue testing for potential impairment at least annually or as otherwise required by applicable accounting standards. There was no impairment of long-lived assets for the three and six months ended July 31, 2018 and 2017.

Goodwill. The purchase price of an acquired company is allocated between intangible assets and the net tangible assets of the acquired business with the residual of the purchase price recorded as goodwill. All identifiable goodwill as of July 31, 2018 and January 31, 2018 was attributable to the purchase of Perma-Pipe Canada, Ltd.

	January 31, 2018		Foreign exchange change effect			July 31, 2018
Goodwill		$2,423		($136	)		$2,287

The Company performs an impairment assessment of goodwill annually as of January 31, or more frequently if triggering events occur, based on the estimated fair value of the related reporting unit or intangible asset. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. There was no impairment of goodwill for the three and six months ended July 31, 2018 and 2017.