Note E - Segment Information for Assets (Details) - USD ($)	Sep. 30, 2015	Mar. 31, 2015
Coil [Member] | Operating Segments [Member]
Total assets	$ 24,657,000	$ 21,249,000
Tubular [Member] | Operating Segments [Member]
Total assets	39,291,000	42,144,000
Operating Segments [Member]
Total assets	63,948,000	63,393,000
Corporate, Non-Segment [Member]
Total assets	3,034,000	3,565,000
Total assets	$ 66,981,946	$ 66,958,024