FINANCE RECEIVABLES - Past Due Finance Receivables (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 134,500,000	$ 155,300,000
Noncurrent past due	13,700,000	10,900,000
Total finance receivables	148,200,000	166,200,000
31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	3,000,000.0	2,400,000
61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	800,000	400,000
Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	9,900,000	8,100,000
Commercial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	117,100,000	135,100,000
Noncurrent past due	13,500,000	10,600,000
Total finance receivables	130,600,000	145,700,000
Non-accrual status	26,900,000	27,100,000
Commercial loans | 31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	3,000,000.0	2,400,000
Commercial loans | 61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	800,000	100,000
Commercial loans | Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	9,700,000	8,100,000
Sales-type leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	17,400,000	20,200,000
Noncurrent past due	200,000	300,000
Total finance receivables	17,600,000	20,500,000
Non-accrual status	2,500,000	300,000
Sales-type leases | 31-60 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	0	0
Sales-type leases | 61-90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	0	300,000
Sales-type leases | Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Noncurrent past due	$ 200,000	$ 0