ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Software Development Costs (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Costs Incurred, Development Costs	$ 0.3	$ 0.4
Minimum \| Software
Finite-Lived Intangible Assets [Line Items]
Estimated useful life (in years)		3 years
Maximum \| Software
Finite-Lived Intangible Assets [Line Items]
Estimated useful life (in years)		5 years

The cash outflow associated with the development, modification or acquisition of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

Name:	us-gaap_PaymentsForSoftware
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration