RESTRUCTURING (Details) (USD $)	3 Months Ended	12 Months Ended		27 Months Ended		3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	12 Months Ended	27 Months Ended	3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	27 Months Ended	3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	12 Months Ended	27 Months Ended	3 Months Ended	12 Months Ended	27 Months Ended	3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	12 Months Ended	27 Months Ended	3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	12 Months Ended	27 Months Ended	3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	12 Months Ended	27 Months Ended	3 Months Ended	12 Months Ended		27 Months Ended	3 Months Ended	1 Months Ended
	Mar. 31, 2013 sqft	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2013 Capital Expenditures:	Dec. 31, 2012 Capital Expenditures:	Dec. 31, 2011 Capital Expenditures:	Mar. 31, 2013 Capital Expenditures:	Mar. 31, 2013 Capital Expenditures: Gearing	Dec. 31, 2012 Capital Expenditures: Gearing	Dec. 31, 2011 Capital Expenditures: Gearing	Mar. 31, 2013 Capital Expenditures: Gearing	Mar. 31, 2013 Capital Expenditures: Corporate	Dec. 31, 2012 Capital Expenditures: Corporate	Mar. 31, 2013 Capital Expenditures: Corporate	Mar. 31, 2013 Non-Cash Expense:	Dec. 31, 2012 Non-Cash Expense:	Dec. 31, 2011 Non-Cash Expense:	Mar. 31, 2013 Non-Cash Expense:	Mar. 31, 2013 Non-Cash Expense: Towers	Mar. 31, 2013 Non-Cash Expense: Towers	Mar. 31, 2013 Non-Cash Expense: Gearing	Dec. 31, 2012 Non-Cash Expense: Gearing	Dec. 31, 2011 Non-Cash Expense: Gearing	Mar. 31, 2013 Non-Cash Expense: Gearing	Mar. 31, 2013 Non-Cash Expense: Services	Dec. 31, 2012 Non-Cash Expense: Services	Mar. 31, 2013 Non-Cash Expense: Services	Mar. 31, 2013 Non-Cash Expense: Corporate	Dec. 31, 2011 Non-Cash Expense: Corporate	Mar. 31, 2013 Non-Cash Expense: Corporate	Mar. 31, 2013 Cost of sales: Cash Expense:	Dec. 31, 2012 Cost of sales: Cash Expense:	Dec. 31, 2011 Cost of sales: Cash Expense:	Mar. 31, 2013 Cost of sales: Cash Expense:	Mar. 31, 2013 Cost of sales: Cash Expense: Gearing	Dec. 31, 2012 Cost of sales: Cash Expense: Gearing	Dec. 31, 2011 Cost of sales: Cash Expense: Gearing	Mar. 31, 2013 Cost of sales: Cash Expense: Gearing	Mar. 31, 2013 Cost of sales: Cash Expense: Services	Dec. 31, 2012 Cost of sales: Cash Expense: Services	Mar. 31, 2013 Cost of sales: Cash Expense: Services	Mar. 31, 2013 Selling, general and administrative Cash Expense:	Dec. 31, 2012 Selling, general and administrative Cash Expense:	Dec. 31, 2011 Selling, general and administrative Cash Expense:	Mar. 31, 2013 Selling, general and administrative Cash Expense:	Mar. 31, 2013 Selling, general and administrative Cash Expense: Towers	Dec. 31, 2012 Selling, general and administrative Cash Expense: Towers	Mar. 31, 2013 Selling, general and administrative Cash Expense: Towers	Mar. 31, 2013 Selling, general and administrative Cash Expense: Gearing	Dec. 31, 2012 Selling, general and administrative Cash Expense: Gearing	Dec. 31, 2011 Selling, general and administrative Cash Expense: Gearing	Mar. 31, 2013 Selling, general and administrative Cash Expense: Gearing	Mar. 31, 2013 Selling, general and administrative Cash Expense: Services	Dec. 31, 2012 Selling, general and administrative Cash Expense: Services	Mar. 31, 2013 Selling, general and administrative Cash Expense: Services	Mar. 31, 2013 Selling, general and administrative Cash Expense: Corporate	Dec. 31, 2012 Selling, general and administrative Cash Expense: Corporate	Dec. 31, 2011 Selling, general and administrative Cash Expense: Corporate	Mar. 31, 2013 Selling, general and administrative Cash Expense: Corporate	Mar. 31, 2013 Other - Towers expected gain on Brandon Facility: Cash Expense:	Apr. 30, 2013 Brandon Facility sqft item
RESTRUCTURING
Percentage of facility footprint planned to be reduced through the sale and/or closure	40.00%
Area of facilities planned to be reduced through the sale and/or closure (in square feet)	600,000
Increase in liquidity as a result of the sale of manufacturing facility																																																															$ 8,000,000
Number of facilities for which agreement has been reached to close or reduce leased presence																																																															6
Area of facilities for which agreement has been reached to close or reduce leased presence																																																															400,000
Liability associated with environmental remediation costs	352,000			352,000	352,000
Restructuring charges incurred	1,967,000	5,092,000	874,000	7,933,000		636,000	2,596,000	5,000	3,237,000	359,000	2,072,000	5,000	2,436,000	277,000	524,000	801,000	454,000	1,224,000	297,000	1,975,000	290,000	290,000	179,000	1,166,000	247,000	1,592,000	(15,000)	58,000	43,000		50,000	50,000	276,000	533,000	131,000	940,000	157,000	308,000	131,000	596,000	119,000	225,000	344,000	601,000	739,000	441,000	1,781,000	78,000	130,000	208,000	65,000	520,000	35,000	620,000		40,000	40,000	458,000	49,000	406,000	913,000
Expected cost to be incurred to implement the restructuring plan	$ 12,840,000					$ 5,860,000				$ 5,059,000				$ 801,000			$ 5,000,000				$ 290,000		$ 4,652,000				$ 43,000			$ 50,000			$ 3,564,000				$ 3,120,000				$ 444,000			$ 1,781,000				$ 208,000			$ 620,000				$ 40,000			$ 913,000				$ (3,400,000)