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

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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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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) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended
	Dec. 31, 2016	Jan. 31, 2017	Apr. 01, 2017	Apr. 02, 2016
Goodwill	$ 12,325		$ 12,325
Contingent Consideration [Member]
Payments to Acquire Businesses, Gross			8	$ 35
BGA, LLC [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			700
Point Comm, Inc. [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			1,100
Substation Design Services, LLC [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			1,500
Allied Health Professionals, LLC [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			$ 100
Payments to Acquire Businesses, Gross		$ 275
Goodwill	695
Business Combination, Consideration Transferred	695
Allied Health Professionals, LLC [Member] \| Contingent Consideration Tied To Certain Gross Profit Targets Earned [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	140
Allied Health Professionals, LLC [Member] \| Unsecured Notes Payable [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 280