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Discontinued operations (Detail Textuals) (USD $)	1 Months Ended	12 Months Ended
Discontinued operations (Detail Textuals) (USD $)	Sep. 18, 2012 Queen Cutlery Company (QCC)	Dec. 31, 2012 Queen Cutlery Company (QCC)	Dec. 31, 2012 Aero Metal Products, Inc. (AMP)	Jul. 23, 2012 Aero Metal Products, Inc. (AMP)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposition of sale of assets for cash consideration	$ 650,000
Loss from discontinued operations before income tax		793,000	1,153,000
Pre-tax loss on disposal related to a write-down of certain assets		406,000	592,000
Capital lease obligations related party				$ 588,000

Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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