Quarterly report pursuant to Section 13 or 15(d)

LEASES - Components of Lease Expense (Details)

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LEASES - Components of Lease Expense (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Lessee, Lease, Description [Line Items]    
Total operating lease cost $ 968,000 $ 1,173,000
Total lease cost 968,000 1,173,000
Short-term lease costs 100,000 100,000
Variable lease costs 0 0
Cost of sales, exclusive of depreciation and amortization    
Lessee, Lease, Description [Line Items]    
Total operating lease cost 920,000 1,139,000
Selling, general and administrative    
Lessee, Lease, Description [Line Items]    
Total operating lease cost $ 48,000 $ 34,000