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CONTRACT ASSETS AND LIABILITIES (Details) - USD ($)	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Apr. 01, 2017	Dec. 29, 2018
Satisfaction of Performance Obligations [Line Items]
Contract assets—current	$ 2,141,677			$ 3,089,663
Contract liabilities—current	(1,189,772)			(388,933)
Contract liabilities—noncurrent	(20,142)			(17,294)
Net contract assets (liabilities)	931,763			$ 2,683,436
Dollar Change
Contract assets—current	(947,986)
Contract liabilities—current	(800,839)
Contract liabilities—noncurrent	(2,848)
Net contract assets (liabilities)	$ (1,751,673)
Percent Change
Contract assets—current	(31.00%)
Contract liabilities—current	206.00%
Contract liabilities—noncurrent	16.50%
Net contract assets (liabilities)	(65.00%)
Revenue recognized	$ 100,000	$ 100,000
Remaining performance obligation	$ 7,000,000
Performance obligation expected time of satisfaction		12 years
Point in time
Percent Change
Percent of product and services transfered to customer		71.00%	79.00%
Over time
Percent Change
Percent of product and services transfered to customer		29.00%	21.00%

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