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Intangible Assets | 12 Months Ended
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Mar. 31, 2013
Intangible Assets [Abstract] |
Intangible Assets | NOTE 5 — Intangible Assets: Intangible assets are comprised of the following:
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
At March 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |
Intangibles subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |
Backlog |  | $ | 170 |  |  | $ | 170 |  |  | $ | — |
Customer relationships |  |  | 2,700 |  |  |  | 412 |  |  |  | 2,288 |
|  | $ | 2,870 |  |  | $ | 582 |  |  | $ | 2,288 |
Intangibles not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |
Permits |  | $ | 10,300 |  |  | $ | — |  |  | $ | 10,300 |
Tradename |  |  | 2,500 |  |  |  | — |  |  |  | 2,500 |
|  | $ | 12,800 |  |  | $ | — |  |  | $ | 12,800 |
At March 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |
Intangibles subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |
Backlog |  | $ | 170 |  |  | $ | 170 |  |  | $ | — |
Customer relationships |  |  | 2,700 |  |  |  | 232 |  |  |  | 2,468 |
|  | $ | 2,870 |  |  | $ | 402 |  |  | $ | 2,468 |
Intangibles not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |
Permits |  | $ | 10,300 |  |  | $ | — |  |  | $ | 10,300 |
Tradename |  |  | 2,500 |  |  |  | — |  |  |  | 2,500 |
|  | $ | 12,800 |  |  | $ | — |  |  | $ | 12,800 |
Intangible assets are amortized on a straight line basis over their estimated useful lives. Intangible amortization expense was $180, $250 and $152 in fiscal 2013, fiscal 2012 and fiscal 2011, respectively. As of March 31, 2013, amortization expense is estimated to be $180 in each of the fiscal years ending March 31, 2014, 2015, 2016, 2017 and 2018.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44, 45, 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16373-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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