Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Depreciation Expense (Details)

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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Depreciation Expense (Details)
3 Months Ended
Mar. 31, 2019
Minimum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 3 years
Maximum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 25 years