Amount of assumed costs and earnings in excess of billings.

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Amount of accounts payable liabilities and accrued expenses for goods and services received that were used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of deferred tax liability and other liabilities assumed at the acquisition date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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PURCHASE OF ATLANTIC PROJECTS COMPANY LIMITED - fair value of assets and liabilities acquired (Details 3) - USD ($)		9 Months Ended
	May. 29, 2014	Oct. 31, 2015	May. 29, 2015	Jan. 31, 2015	Oct. 31, 2014
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill		$ 22,525,000		$ 18,476,000	$ 18,476,000
Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Useful life		5 years
Atlantic Projects Company Limited [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Cash			$ 2,274,000
Accounts receivable			5,735,000
Costs and estimated earnings in excess of billings			3,177,000
Prepaid expenses and other assets			592,000
Property, plant and equipment			1,303,000
Intangible assets (defined lives)			543,000
Goodwill			4,051,000
Less - accounts payable and accrued expenses (including cash dividends payable)			5,830,000
Less - deferred taxes and other liabilities			744,000
Net assets acquired			$ 11,101,000
Atlantic Projects Company Limited [Member] \| Customer Contracts [Member] \| Maximum [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Useful life	1 year
Atlantic Projects Company Limited [Member] \| Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Useful life	5 years