ACCOUNTING POLICIES AND PRONOUNCEMENTS (Allowance for Credit Losses Activity) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	$ 200
MUD receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	0
Current-period provision for expected credit losses	0
Write-offs	0
Recoveries	0
Balance at end of period	0
SID receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	0
Current-period provision for expected credit losses	0
Write-offs	0
Recoveries	0
Balance at end of period	0
TIF receivables
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	0
Current-period provision for expected credit losses	0
Write-offs	0
Recoveries	0
Balance at end of period	0
Net investments in lease receivable
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	17
Current-period provision for expected credit losses	0
Write-offs	0
Recoveries	0
Balance at end of period	17
Notes receivable
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	209
Current-period provision for expected credit losses	39
Write-offs	(1)
Recoveries	0
Balance at end of period	247
Trade accounts receivable
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	0
Current-period provision for expected credit losses	60
Write-offs	0
Recoveries	0
Balance at end of period	$ 60