MAJOR CUSTOMERS (Details)	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 28, 2012 item	Sep. 28, 2012 Revenue item	Sep. 30, 2011 Revenue item	Sep. 28, 2012 Revenue item	Sep. 30, 2011 Revenue item	Sep. 28, 2012 Revenue Customer	Sep. 30, 2011 Revenue Customer	Sep. 28, 2012 Revenue Customer	Sep. 30, 2011 Revenue Customer	Sep. 28, 2012 Revenue Customer Less than	Sep. 30, 2011 Revenue Customer AT&T	Sep. 28, 2012 Revenue Customer AT&T	Sep. 30, 2011 Revenue Customer AT&T	Sep. 30, 2011 Revenue Customer Bahamas Telecom	Sep. 28, 2012 Revenue Customer Level 3 Communications	Sep. 28, 2012 Accounts receivable balance Customer item	Dec. 31, 2011 Accounts receivable balance Customer item
MAJOR CUSTOMERS
Threshold percentage						10.00%	10.00%	10.00%	10.00%							10.00%	10.00%
Number of periods	1	1	1	1	1
Concentration risk, percentage										10.00%	22.00%	24.00%	13.00%	20.00%	12.00%	11.00%	21.00%
Number of major customers																1	1