SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Reconciliation of segment assets - other significant items (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting [Abstract]
Unallocated deprecation and amortization - OmniMetrix	$ 100		$ 11
Depreciation and amortization - segments	1,354		1,392		847
Depreciation and amortization - adjustments	102	[1]	14	[1]	4
Depreciation and amortization	1,456		1,406		851
Stock compensation expense - segments	293		323		0
Stock compensation expense - adjustments	926		532		458
Total stock compensation expense	1,219		855		458
Expenditures for assets - segments	2,345		537		475
Expenditure for assets - adjustments	1,121	[2]	147	[2]	27
Payments to Acquire Property, Plant, and Equipment	3,466		684		502
Unallocated expenditures for assets - OmniMetrix	$ 985		$ 106

[1] Includes $100 and $11 of unallocated depreciation and amortization with respect to OmniMetrix for the years ended December 31, 2013 and 2012.

[2] Includes $985 and $106 of unallocated expenditures for assets with respect to OmniMetrix for the years ended December 31, 2013 and 2012.