Note E - Segment Information for Assets (Details) - USD ($)	Dec. 31, 2015	Mar. 31, 2015
Operating Segments [Member] | Coil [Member]
Total assets	$ 26,503,000	$ 21,249,000
Operating Segments [Member] | Tubular [Member]
Total assets	37,819,000	42,144,000
Operating Segments [Member]
Total assets	64,322,000	63,393,000
Corporate, Non-Segment [Member]
Total assets	5,359,000	3,565,000
Total assets	$ 69,681,139	$ 66,958,024