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RESTRUCTURING AND RELATED CHARGES Restructuring Narrative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended				9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 OmniMetrix - Legal Entity [Member]	Dec. 31, 2012 OmniMetrix - Legal Entity [Member]	Sep. 30, 2013 GridSense - Legal Entity [Member]	Dec. 31, 2012 GridSense - Legal Entity [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs					$ 155		$ 302
Restructuring and Related Cost, Number of Positions Eliminated							17
Other Restructuring Costs					202		101
Restructuring costs - abandonment of fixed assets			573	0	415		39
Restructuring costs - inventory charge							152
Restructuring Reserve					320	0	122	0
Restructuring Reserve, Noncurrent					173
Restructuring Reserve, Current					147		122
Restructuring Charges	$ 772	$ 0	$ 1,366	$ 0	$ 772		$ 594

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The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy pursuant to a duly authorized plan, excluding a discontinued operation as defined by generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, but excludes costs associated with the retirement of a long-lived asset and severance costs associated with established compensation plans.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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