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Customer Contracts (Details Textual) (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2013 SME [Member] | Jun. 30, 2012 SME [Member] | Jun. 30, 2013 S.M. Electric Company [Member] | Jun. 30, 2012 S.M. Electric Company [Member] | Jun. 30, 2013 Western Canada Aboveground Storage Tank Project [Member] | Dec. 31, 2012 Western Canada Aboveground Storage Tank Project [Member] | Jun. 30, 2013 Western Canada Aboveground Storage Tank Project [Member]
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Record amount of claims |  | $ 0.7 | $ 0.7 |  |  |  |  |
Contracts Receivable, Claims and Uncertain Amounts, Expected to be Collected in Next Rolling Twelve Months |  |  |  | 2.9 | 2.9 |  |  |
Pretax charge on a Canadian project |  |  |  |  |  | 0.6 | 3.3 | 3.7
Change In Accounting Estimate, Financial Effect, Net Income |  |  |  |  |  |  |  | 2.4
Change In Accounting Estimate, Financial Effect, Diluted Earnings Per Share |  |  |  |  |  |  |  | $ 0.10
Loss Contingency, Damages Awarded, Value | 1.5 |  |  |  |  |  |  |
Loss Contingency Accrual, Carrying Value, Period Increase (Decrease) | $ 1.0 |  |  |  |  |  |  |

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- Definition Amount of billed or unbilled claims or other similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts that are expected to be collected in the next rolling twelve months following the latest balance sheet presented. + References No definition available. + Details
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