Operating segments (Tables)

12 Months Ended

Feb. 28, 2018

Segment Reporting [Abstract]

Operations and assets by segment

	Year Ended
	February 28, 2018			February 28, 2017			February 29, 2016
Net sales:
Energy	$	421,033		$	488,002		$	487,038
Metal Coatings	389,397			375,536			402,362
Total net sales	$	810,430		$	863,538		$	889,400
Operating income (loss):
Energy	$	(1,766	)	$	52,577		$	56,478
Metal Coatings	84,332			79,033			94,766
Corporate	(34,318		)	(32,702		)	(30,949		)
Total operating income	$	48,248		$	98,908		$	120,295

	Year Ended
	February 28, 2018		February 28, 2017		February 29, 2016
Depreciation and amortization:
Energy	$	19,996	$	19,624	$	19,131
Metal Coatings	28,617		28,650		26,863
Corporate	1,913		2,083		1,423
Total	$	50,526	$	50,357	$	47,417

	Year Ended
	February 28, 2018		February 28, 2017		February 29, 2016
Expenditures for acquisitions, net of cash, and property, plant and equipment:
Energy	$	32,903	$	31,474	$	12,863
Metal Coatings	39,474		32,099		86,724
Corporate	2,020		540		858
Total	$	74,397	$	64,113	$	100,445

	February 28, 2018		February 28, 2017
Assets:
Energy	$	554,866	$	536,557
Metal Coatings	460,575		428,330
Corporate	12,768		13,467
Total assets	$	1,028,209	$	978,354

Financial Information About Geographical Areas

Financial information about geographical areas for the periods presented was as follows (in thousands):

	Year Ended
	February 28, 2018			February 28, 2017			February 29, 2016
Geographic net sales:
United States	$	654,336		$	705,976		$	710,767
Other countries	157,280			157,718			179,832
Eliminations	(1,186		)	(156		)	(1,199		)
Total	$	810,430		$	863,538		$	889,400

	February 28, 2018		February 28, 2017
Property, plant and equipment, net:
United States	$	194,418	$	205,079
Canada	18,254		18,002
Other Countries	4,183		5,529
Total	$	216,855	$	228,610