The number of business combinations which have contingent consideration outstanding.

No definition available.

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Balance Type:	na
Period Type:	instant

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Balance Type:	credit
Period Type:	duration

- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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- Definition

Amount of liabilities assumed at the acquisition date.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Note 6 - Acquisitions (Details Textual) $ in Thousands			3 Months Ended
Note 6 - Acquisitions (Details Textual) $ in Thousands	Oct. 01, 2017 USD ($)	Apr. 16, 2017 USD ($)	Mar. 31, 2018 USD ($)	Apr. 01, 2017 USD ($)	Dec. 30, 2017 USD ($)
Business Combinations, Acquisitions with Contingent Consideration Outstanding			6
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			$ 4,100
Payments to Acquire Businesses, Gross			$ 0	$ 8
RAF Services, Inc [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High					$ 10
Business Combination, Consideration Transferred, Total		$ 133
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total		$ 123
PSR Engineering Solutions d.o.o. Beograd (Voždovac) [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 1,763
Payments to Acquire Businesses, Gross	1,000
Business Combination, Consideration Transferred, Total	3,248
Business Combination, Consideration Transferred, Liabilities Incurred	485
Cash Acquired from Acquisition	237
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total	$ 58