Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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Industry Segment Data - Summary of Significant Financial Information Relating to Product Groups (Detail) (USD $)	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 25,321,149us-gaap_SalesRevenueGoodsNet	$ 23,552,636us-gaap_SalesRevenueGoodsNet	$ 31,544,474us-gaap_SalesRevenueGoodsNet	$ 27,904,521us-gaap_SalesRevenueGoodsNet	$ 31,981,813us-gaap_SalesRevenueGoodsNet	$ 28,274,696us-gaap_SalesRevenueGoodsNet	$ 26,310,369us-gaap_SalesRevenueGoodsNet	$ 29,582,144us-gaap_SalesRevenueGoodsNet	$ 108,322,780us-gaap_SalesRevenueGoodsNet	$ 116,149,022us-gaap_SalesRevenueGoodsNet
Operating profit (loss)									624,776us-gaap_OperatingIncomeLoss	2,474,696us-gaap_OperatingIncomeLoss
Interest and other income									61,040us-gaap_InterestAndOtherIncome	62,012us-gaap_InterestAndOtherIncome
EARNINGS BEFORE INCOME TAXES									685,816	2,536,708
Total assets	66,958,024us-gaap_Assets				72,284,399us-gaap_Assets				66,958,024us-gaap_Assets	72,284,399us-gaap_Assets
Depreciation									1,721,625us-gaap_Depreciation	1,823,072us-gaap_Depreciation
Capital Expenditure									5,876,205	1,907,231
Operating Segments
Segment Reporting Information [Line Items]
Operating profit (loss)									2,342,520	4,448,930
Total assets	63,392,495				56,103,157				63,392,495	56,103,157
Operating Segments \| Coil
Segment Reporting Information [Line Items]
Net sales									72,913,058	66,138,845
Operating profit (loss)									(259,690)	(839,442)
Total assets	21,248,710				22,308,165				21,248,710	22,308,165
Depreciation									1,141,567	1,140,250
Capital Expenditure									229,425	364,443
Operating Segments \| Tubular
Segment Reporting Information [Line Items]
Net sales									35,409,722	50,010,177
Operating profit (loss)									2,602,210	5,288,372
Total assets	42,143,785				33,794,992				42,143,785	33,794,992
Depreciation									571,086	673,850
Capital Expenditure									5,646,780	1,533,489
Corporate and other
Segment Reporting Information [Line Items]
General corporate expenses									(1,717,744)	(1,974,234)
Total assets	3,565,529				16,181,242				3,565,529	16,181,242
Depreciation									8,972	8,972
Capital Expenditure										$ 9,299