Note F - Property, Plant and Equipment	6 Months Ended
Sep. 30, 2021
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	NOTE F — PROPERTY, PLANT AND EQUIPMENT On May 25, 2021, the Company announced plans for a new facility in Sinton, Texas that will be part of the coil product segment. The new facility will be on the campus of Steel Dynamics, Inc.'s ("SDI") new flat roll steel mill currently under construction in Sinton, Texas. The Company's new location will consist of an approximately 70,000 square foot building located on approximately 26.5 acres leased from SDI under a 99-year agreement with an annual rental payment of $1. The Company has selected Red Bud Industries to build a stretcher leveler cut-to-length line for the facility that is capable of handling material up to 1” thick, widths up to 96” and yields exceeding 100,000 psi. The Company expects the location to commence operations in April 2022 and estimates the total cost of the project to be $21 million. At September 30, 2021, the Company's construction in process related to the Sinton project was $5,994,357 consisting of $2,760,289 in cash payments and $3,234,068 of accrued capital expenditures. During the three and six months ended September 30, 2021, the Company wrote off fully depreciated fixed assets that were no longer in use with an original cost and accumulated depreciation of approximately $115,578 and $2,060,226, respectively. During the three months ended September 30, 2021, the Company disposed of the temper mill that was taken out of the Decatur facility prior to the new stretcher leveler coil processing line being installed. The Company received $160,542 in proceeds from the disposal of the equipment which had an original cost of $3,604,209 and accumulated depreciation of $3,447,465.

Note F - Property, Plant and Equipment

6 Months Ended

Sep. 30, 2021

Property, Plant and Equipment Disclosure [Text Block]

NOTE F — PROPERTY, PLANT AND EQUIPMENT

On May 25, 2021, the Company announced plans for a new facility in Sinton, Texas that will be part of the coil product segment. The new facility will be on the campus of Steel Dynamics, Inc.'s ("SDI") new flat roll steel mill currently under construction in Sinton, Texas. The Company's new location will consist of an approximately 70,000 square foot building located on approximately 26.5 acres leased from SDI under a 99-year agreement with an annual rental payment of $1. The Company has selected Red Bud Industries to build a stretcher leveler cut-to-length line for the facility that is capable of handling material up to 1” thick, widths up to 96” and yields exceeding 100,000 psi. The Company expects the location to commence operations in April 2022 and estimates the total cost of the project to be $21 million. At September 30, 2021, the Company's construction in process related to the Sinton project was $5,994,357 consisting of $2,760,289 in cash payments and $3,234,068 of accrued capital expenditures.

During the three and six months ended September 30, 2021, the Company wrote off fully depreciated fixed assets that were no longer in use with an original cost and accumulated depreciation of approximately $115,578 and $2,060,226, respectively. During the three months ended September 30, 2021, the Company disposed of the temper mill that was taken out of the Decatur facility prior to the new stretcher leveler coil processing line being installed. The Company received $160,542 in proceeds from the disposal of the equipment which had an original cost of $3,604,209 and accumulated depreciation of $3,447,465.