PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Dec. 31, 2018

PROPERTY, PLANT AND EQUIPMENT [Abstract]

PROPERTY, PLANT AND EQUIPMENT

5. PROPERTY, PLANT AND EQUIPMENT

Property and equipment are stated at cost, less accumulated depreciation. Machinery and equipment, furniture and fixtures, and autos are depreciated on the straight-line basis over their estimated useful lives of 5 to 10 years. Leasehold improvements are amortized over the lesser of their estimated useful lives or the remaining life of the lease. As of December 31, 2018, 2017 and 2016, property, plant and equipment were fully depreciated.