SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Tables)

6 Months Ended

Jun. 30, 2021

SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE [Abstract]

Schedule of Net Revenues

	For the Three Months Ended June 30,
(dollars in thousands)	Diagnostic Testing				Biomarker Testing				Total
	2021		2020		2021		2020		2021		2020
Medicaid	$	18	$	16	$	—	$	—	$	18	$	16
Medicare		1,009		643		—		—		1,009		643
Self-pay		69		86		—		—		69		86
Third party payers		921		847		—		—		921		847
Contract diagnostics		—		—		21		24		21		24
Service revenue, net	$	2,017	$	1,592	$	21	$	24	$	2,038	$	1,616

	For the Six Months Ended June 30,
(dollars in thousands)	Diagnostic Testing				Biomarker Testing				Total
	2021		2020		2021		2020		2021		2020
Medicaid	$	31	$	25	$	—	$	—	$	31	$	25
Medicare		1,993		1,168		—		—		1,993		1,168
Self-pay		116		136		—		—		116		136
Third party payers		1,821		1,363		—		—		1,821		1,363
Contract diagnostics		—		—		21		382		21		382
Service revenue, net	$	3,961	$	2,692	$	21	$	382	$	3,982	$	3,074

Schedule of Gross to Net Sales Adjustments

	For the Three Months Ended June 30,
(dollars in thousands)					Contractual Allowances and				Revenues, net of Contractual
	Gross Revenues				adjustments				Allowances and adjustments
	2021		2020		2021		2020		2021		2020
Medicaid	$	18	$	16	$	—	$	—	$	18	$	16
Medicare		1,009		643		—		—		1,009		643
Self-pay		69		89		—		(3)		69		86
Third party payers		3,225		2,949		(2,304)		(2,102)		921		847
Contract diagnostics		21		24		—		—		21		24
		4,342		3,721		(2,304)		(2,105)		2,038		1,616
Other		206		29		—		—		206		29
	$	4,548	$	3,750	$	(2,304)	$	(2,105)	$	2,244	$	1,645

	For the Six Months Ended June 30,
(dollars in thousands)					Contractual Allowances and				Revenues, net of Contractual
	Gross Revenues				adjustments				Allowances and adjustments
	2021		2020		2021		2020		2021		2020
Medicaid	$	31	$	25	$	—	$	—	$	31	$	25
Medicare		1,993		1,168		—		—		1,993		1,168
Self-pay		116		139		—		(3)		116		136
Third party payers		6,357		4,757		(4,536)		(3,394)		1,821		1,363
Contract diagnostics		21		382		—		—		21		382
		8,518		6,471		(4,536)		(3,397)		3,982		3,074
Other		373		53		—		—		373		53
	$	8,891	$	6,524	$	(4,536)	$	(3,397)	$	4,355	$	3,127

Schedule of Reported Revenues Net of Collection Allowance

	For the Three Months Ended June 30,
	Revenues, net of
(dollars in thousands)	Contractual Allowances				Allowances for doubtful
	and adjustments				accounts				Total
	2021		2020		2021		2020		2021		2020
Medicaid	$	18	$	16	$	10	$	(16)	$	28	$	—
Medicare		1,009		643		110		(97)		1,119		546
Self-pay		69		86		—		—		69		86
Third party payers		921		847		(20)		(224)		901		623
Contract diagnostics		21		24		—		—		21		24
		2,038		1,616		100		(337)		2,138		1,279
Other		206		29		—		—		206		29
	$	2,244	$	1,645	$	100	$	(337)	$	2,344	$	1,308

	For the Six Months Ended June 30,
	Revenues, net of
(dollars in thousands)	Contractual Allowances				Allowances for doubtful
	and adjustments				accounts				Total
	2021		2020		2021		2020		2021		2020
Medicaid	$	31	$	25	$	1	$	(24)	$	32	$	1
Medicare		1,993		1,168		11		(175)		2,004		993
Self-pay		116		136		—		—		116		136
Third party payers		1,821		1,363		(199)		(404)		1,622		959
Contract diagnostics		21		382		—		—		21		382
		3,982		3,074		(187)		(603)		3,795		2,471
Other		373		53		—		—		373		53
	$	4,355	$	3,127	$	(187)	$	(603)	$	4,168	$	2,524

Schedule of Receivables

The following summarizes the mix of receivables outstanding related to payer categories:

(dollars in thousands)	June 30, 2021		December 31, 2020
Medicaid	$	27	$	131
Medicare		435		1,054
Self-pay		64		276
Third party payers		1,193		3,373
Contract diagnostic services and other		133		53
	$	1,852	$	4,887
Less allowance for doubtful accounts		(1,409)		(4,013)
Accounts receivable, net	$	443	$	874

Schedule of Allowance for Doubtful Accounts

The following table presents the roll-forward of the allowance for doubtful accounts for the six months ended June 30, 2021.

			Allowance for
			Doubtful
(dollars in thousands)			Accounts
Balance, January 1, 2021			$	(4,013)
Collection Allowance:
Medicaid	$	1
Medicare		11
Third party payers		(199)
		(187)
Bad debt expense	$	(1)
Total charges				(188)
Write-offs				2,792
Balance, June 30, 2021			$	(1,409)

Schedule of Customer Revenue and Accounts Receivable Concentrations

Our customers are oncologists, hospitals, reference laboratories, physician-office laboratories, and pharma and biotech companies. Customers that accounted for 10% or greater of our net sales or accounts receivable for the identified periods is as follows:

	Net sales							Accounts receivable, as of
	Three Months Ended				Six Months Ended
	June 30,				June 30,			June 30,		December 31,
	2021		2020		2021	2020		2021		2020
Customer A	10	%	12	%	*	11	%	*		*
Customer B	*		11	%	*	*		*		*
Customer C	*		*		*	13	%	*		*
Customer D	*		*		*	*		11	%	*
Customer E	*		*		*	*		12	%	*
* represents less than 10%