SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Property and Equipment) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 48,328,000	$ 48,466,000
Less accumulated depreciation and amortization	26,502,000	24,256,000
Property and equipment, net	21,826,000	24,210,000	26,199,000
Depreciation expense	3,300,000	3,700,000	3,800,000
Cost of Sales [Member]
Property, Plant and Equipment, Net [Abstract]
Depreciation expense	2,600,000	2,900,000	3,000,000
General and Administrative Expense [Member]
Property, Plant and Equipment, Net [Abstract]
Depreciation expense	700,000	800,000	800,000
Land [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	6,026,000	6,026,000
Equipment and vehicles [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	25,500,000	26,227,000
Equipment and vehicles [Member] | Minimum [Member]
Property, Plant and Equipment, Net [Abstract]
Life	1 year
Equipment and vehicles [Member] | Maximum [Member]
Property, Plant and Equipment, Net [Abstract]
Life	10 years
Office equipment [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	2,057,000	2,021,000
Office equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Net [Abstract]
Life	1 year
Office equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Net [Abstract]
Life	7 years
Rental equipment [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	5,678,000	5,191,000
Operating lease term	5 years
Future Minimum Payments Receivable
2014	1,790,000
2015	1,507,000
2016	1,175,000
2017	743,000
2018	255,000
Total future operating lease revenue	5,470,000
Rental equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Net [Abstract]
Life	3 years
Rental equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Net [Abstract]
Life	5 years
Building and leasehold improvements [Member]
Property, Plant and Equipment, Net [Abstract]
Property and equipment, gross	$ 9,067,000	$ 9,001,000
Building and leasehold improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Net [Abstract]
Life	5 years
Building and leasehold improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Net [Abstract]
Life	40 years