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Summary of Quarterly Data (Unaudited) (Tables)

12 Months Ended

May 31, 2021

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Table Text Block]


		Quarter Ended
(in thousands, except per share)		August 2020				November 2020				February 2021				May 2021
Total Revenue		$	109,325			$	115,000			$	116,709			$	127,425
Gross Margin			50,302				53,214				53,849				57,691
Net income			15,860				15,885				13,377				15,760
Basic net income per share		$	0.15			$	0.15			$	0.13			$	0.15
Diluted net income per share		$	0.15			$	0.15			$	0.12			$	0.15

		Quarter Ended
(in thousands, except per share)		August 2019				November 2019				February 2020				May 2020
Total Revenue		$	101,424			$	107,803			$	99,869			$	109,074
Gross Margin			48,194				51,026				45,330				51,729
Net income			14,652				16,276				12,200				16,347
Basic net income per share		$	0.14			$	0.15			$	0.12			$	0.15
Diluted net income per share		$	0.14			$	0.15			$	0.11			$	0.15