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Intangible Assets | 12 Months Ended
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Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract] |
Intangible Assets | Note 6– Intangible Assets: Intangible assets are comprised of the following:
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Impairment Loss |  |  | Net Carrying Amount |
At March 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 2,700 |  |  | $ | 1,492 |  |  | $ | 1,208 |  |  | $ | — |
Intangibles not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Permits |  | $ | 10,300 |  |  | $ | — |  |  | $ | 10,300 |  |  | $ | — |
Tradename |  |  | 2,500 |  |  |  | — |  |  |  | 2,500 |  |  |  | — |
|  | $ | 12,800 |  |  | $ | — |  |  | $ | 12,800 |  |  | $ | 0 |
At March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 2,700 |  |  | $ | 1,312 |  |  | $ | — |  |  | $ | 1,388 |
Intangibles not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Permits |  | $ | 10,300 |  |  | $ | — |  |  | $ | 8,600 |  |  | $ | 1,700 |
Tradename |  |  | 2,500 |  |  |  | — |  |  |  | 500 |  |  |  | 2,000 |
|  | $ | 12,800 |  |  | $ | — |  |  | $ | 9,100 |  |  | $ | 3,700 |
Finite-lived intangible assets are amortized on a straight-line basis over their estimated useful lives. Intangible amortization expense was $180 in each of fiscal 2019, fiscal 2018 and fiscal 2017. During the third quarter of fiscal 2018, the Company performed its annual goodwill and intangible asset impairment review. The Company assesses impairment by comparing the fair value of its reporting units and intangible assets to their related carrying value. The Company estimated the fair value of intangible assets and goodwill of its commercial nuclear utility business related to the December 2010 acquisition of Energy Steel using the income approach. Under the income approach, the fair value of the business is calculated based on the present value of estimated future cash flows. Cash flow projections are based on management’s estimates of revenue growth rates and operating margins, taking into consideration industry and market conditions. The discount rate used is based on a weighted average cost of capital adjusted for the relevant risk associated with the characteristics of the business and the projected cash flows. The inputs utilized in the analyses are classified as Level 3 inputs within the fair value hierarchy. The impairment review indicated that the fair value of the permits, tradename and goodwill of the business were substantially lower than the carrying value due to reduced investment from the U.S. commercial nuclear utility market, the strength of the Energy Steel brand relative to larger more vertically integrated suppliers, and the bankruptcy of Westinghouse Electric Company which resulted in the stoppage of work at the Summer, South Carolina nuclear facility. As a result, in the third quarter of fiscal 2018 the Company recorded impairment losses of $8,600, $500, and $5,716 for permits, tradename and goodwill, respectively. During the third quarter of fiscal 2019, the Company performed its annual goodwill and intangible asset impairment review based on a weighted combination of the market approach and the income approach as described above. The review indicated that there was no impairment of goodwill and intangible assets. As disclosed in Note 3, in the fourth quarter of fiscal 2019, the Company’s Board of Directors approved a plan to sell Energy Steel and, as a result, the Company classified the assets and liabilities of Energy Steel as "Assets held for sale" and "Liabilities held for sale" in the Consolidated Balance Sheet as of March 31, 2019. An impairment loss totaling $6,449 was recorded in the fourth quarter of fiscal 2019 related to the disposition of Energy Steel which included impairment losses of $1,700, $2,000, $1,208, $1,222 and $319 for permits, tradename, customer relationships, goodwill and other long-lived assets. Goodwill was $0 and $1,222 at March 31, 2019 and 2018, respectively.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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