SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Tables)

3 Months Ended

Mar. 31, 2020

SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE [Abstract]

Schedule of Net Revenues

	For the Three Months Ended March 31,
(dollars in thousands)	Diagnostic Testing				Biomarker Testing				Total
	2020		2019		2020		2019		2020		2019
Medicaid	$	9	$	3	$	—	$	—	$	9	$	3
Medicare		524		394		—		—		524		394
Self-pay		50		4		—		—		50		4
Third party payers		517		356		—		—		517		356
Contract diagnostics		—		—		358		153		358		153
Service revenue, net	$	1,100	$	757	$	358	$	153	$	1,458	$	910

Schedule of Gross to Net Sales Adjustments

The following table presents our revenues initially recognized for each associated payer class during the three months ended March 31, 2020 and 2019.

	For the Three Months Ended March 31,
(dollars in thousands)					Contractual Allowances and				Revenues, net of Contractual
	Gross Revenues				adjustments				Allowances and adjustments
	2020		2019		2020		2019		2020		2019
Medicaid	$	9	$	3	$	—	$	—	$	9	$	3
Medicare		524		394		—		—		524		394
Self-pay		50		4		—		—		50		4
Third party payers		1,808		1,017		(1,291)		(661)		517		356
Contract diagnostics		358		153		—		—		358		153
		2,749		1,571		(1,291)		(661)		1,458		910
Clinical research grants and other		24		7		—		—		24		7
	$	2,773	$	1,578	$	(1,291)	$	(661)	$	1,482	$	917

Schedule of Reported Revenues Net of Collection Allowance [Table Text Block]

	For the Three Months Ended March 31,
	Revenues, net of
(dollars in thousands)	Contractual Allowances				Allowances for doubtful
	and adjustments				accounts				Total
	2020		2019		2020		2019		2020		2019
Medicaid	$	9	$	3	$	(8)	$	(3)	$	1	$	—
Medicare		524		394		(79)		(59)		445		335
Self-pay		50		4		—		—		50		4
Third party payers		517		356		(179)		(142)		338		214
Contract diagnostics		358		153		—		—		358		153
		1,458		910		(266)		(204)		1,192		706
Clinical research grants and other		24		7		—		—		24		7
	$	1,482	$	917	$	(266)	$	(204)	$	1,216	$	713

Schedule of Receivables

(dollars in thousands)	March 31, 2020		December 31, 2019
Medicaid	$	31	$	107
Medicare		1,692		814
Self-pay		65		88
Third party payers		1,710		2,203
Contract diagnostic services		327		36
	$	3,825	$	3,248
Less allowance for doubtful accounts		(2,942)		(2,674)
Accounts receivable, net	$	883	$	574

Schedule of Allowance for Doubtful Accounts

			Allowance for
			Doubtful
(dollars in thousands)			Accounts
Balance, January 1, 2020			$	(2,674)
Collection Allowance:
Medicaid	$	(8)
Medicare		(79)
Third party payers		(179)
		(266)
Bad debt expense	$	(2)
Total charges				(268)
Balance, March 31, 2020			$	(2,942)

Schedule of Customer Revenue and Accounts Receivable Concentrations

Customers that accounted for 10% or greater of our net sales or accounts receivable for the identified periods is as follows:

	Net sales
	Three Months Ended				Accounts receivable, as of
	March 31,				March 31,		December 31,
	2020		2019		2020		2019
Customer A	27	%	*		33	%	*
Customer B	10	%	*		28	%	17	%
Customer C	*		*		*		12	%
Customer D	*		22	%	*		*
* represents less than 10%