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Note 4 - Significant Transactions - Unaudited Pro Forma Information (Details) - GPT Acquisition [Member] - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Pro forma total revenues (1) | [1] | $ 136,792 | $ 134,843
Pro forma net income (2) | [2] | $ 18,953 | $ (3,822)
[1] | Net revenues were adjusted to include net revenues of GPT.
[2] | Pro forma adjustments to net earnings attributable to Mesa Labs include the following: Excludes acquisition-related transaction costs incurred in the year ended March 31, 2020. Excludes interest expense attributable to GPT's external debt that was paid off as part of the acquisition. Total GPT amortization expense of $8,930 for each of the years ended March 31, 2020 and March 31, 2019 based on the adjusted fair value of amortizable intangible assets acquired. Additional charge to cost of revenues of $8,066 included in the year ended March 31, 2019 based on the step-up value of inventory. $8,596 was excluded from the year ended March 31, 2020 based on the step-up value of inventory which would have been included and fully amortized within the first year of the acquisition. Additional stock based compensation expense representing expense for performance share units awarded to certain key GPT employees. Income tax effect of the adjustments made at a blended federal and state statutory rate (approximately 25%).

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