NOTE 3 - DISCONTINUED OPERATIONS (Detail) (USD $)	3 Months Ended		12 Months Ended	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Dec. 29, 2012 Land and Right-of-Way Division [Member] Field Solutions [Member]	Mar. 30, 2013 Inspection Division [Member] Field Solutions [Member]
Assets Held-for-sale, at Carrying Value			$ 7,500,000	$ 7,900,000
Amount of Working Capital at Closing of Sale			4,500,000	5,000,000
Note Receivable Payable to Company for Sale of Asset			3,000,000	1,900,000
Term of Note Receivable			4 years	4 years
Amount of Cash at Closing of Sale				1,000,000
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ 2,938,000	$ 1,000		$ 2,900,000