Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Goodwill (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Unusual or Infrequent Item, or Both [Line Items]
Non-cash goodwill impairment charge		$ 0	$ 0
Hurricanes Irma and Maria
Unusual or Infrequent Item, or Both [Line Items]
Non-cash goodwill impairment charge	$ 5,800,000