REVENUE RECOGNITION (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Deferred revenue	$ 11,543,000	$ 10,558,000
Less: Current portion	4,470,000	4,689,000	[1]
Deferred revenue - less current portion	7,073,000	5,869,000	[1]
Activation Fees [Member]
Deferred revenue	511,000	469,000
Industrial Equipment Installation Revenue [Member]
Deferred revenue	324,000	291,000
Maintenance Revenue [Member]
Deferred revenue	1,981,000	1,478,000
Remote Asset Management Product Revenue [Member]
Deferred revenue	$ 8,727,000	$ 8,320,000

[1] Derived from audited balance sheet as of December 31, 2012