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Acquisition (Details Textual) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011 | Mar. 31, 2013 Selling, General and Administrative Expenses [Member] | Mar. 31, 2012 Selling, General and Administrative Expenses [Member] | Mar. 31, 2013 Energy Steel [Member] | Mar. 31, 2012 Energy Steel [Member] | Mar. 31, 2011 Energy Steel [Member] | Dec. 14, 2010 Energy Steel [Member] | Mar. 31, 2013 Energy Steel [Member] Before Adjustment of Final Allocation of Purchase Price [Member] | Mar. 31, 2013 Energy Steel [Member] Selling, General and Administrative Expenses [Member] | Mar. 31, 2012 Energy Steel [Member] Selling, General and Administrative Expenses [Member]
Acquisition (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounting and purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 17,899 |  |  |
Acquisition-related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 676 |  |  |  |
Received from seller due to reduction in purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 384 |  |  |  |  |
Purchase agreement included a contingent earn-out, minimum |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |
Purchase agreement included a contingent earn-out, maximum |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000 |  |  |  |  |  |
Earn-out paid during period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |  |
Interest expense, contingent earn-out |  |  |  |  |  |  |  |  |  |  |  | 44 | 204 |  |  |  |  |  |  |
Lease Term agreement |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Additional Lease Term agreement |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,938 |  |  |  | 6,938 |  |
Estimated useful life of intangible assets associate with customer relationship |  |  |  |  |  |  |  |  |  |  |  |  |  | 15 years |  |  |  |  |  |
Net sales | 30,905 | 25,633 | 25,902 | 22,533 | 20,250 | 24,329 | 33,595 | 25,012 | 104,973 | 103,186 | 74,235 |  |  |  |  | 5,808 |  |  |  |
Selling, general and administrative expense, adjustment for earn-out |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (975) | $ 230

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- Definition Amount of cash paid to acquire the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph f(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 53 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 59 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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