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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Tables)

6 Months Ended

Jun. 30, 2019

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
		2019			2018			2019			2018			2019			2018
Medicaid		$	9		$	11		$	—		$	—		$	9		$	11
Medicare			450			281			—			—			450			281
Self-pay			11			20			—			—			11			20
Third party payers			451			219			—			—			451			219
Contract diagnostics			—			—			274			368			274			368
Service revenue, net		$	921		$	531		$	274		$	368		$	1,195		$	899

		For the Six Months Ended June 30,
(dollars in thousands)		Diagnostic Testing						Biomarker Testing						Total
		2019			2018			2019			2018			2019			2018
Medicaid		$	12		$	23		$	—		$	—		$	12		$	23
Medicare			844			415			—			—			844			415
Self-pay			15			46			—			—			15			46
Third party payers			807			350			—			—			807			350
Contract diagnostics			—			—			427			856			427			856
Service revenue, net		$	1,678		$	834		$	427		$	856		$	2,105		$	1,690

Schedule of Gross to Net Sales Adjustments

The following table presents our revenues initially recognized for each associated payer class during the three and six months ended June 30, 2019 and 2018.

		For the Three Months Ended June 30,
(dollars in thousands)								Contractual Allowances and						Revenues, net of Contractual
		Gross Revenues						adjustments						Allowances and adjustments
		2019			2018			2019			2018			2019			2018
Medicaid		$	12		$	26		$	(3)		$	(15)		$	9		$	11
Medicare			467			292			(17)			(11)			450			281
Self-pay			11			20			—			—			11			20
Third party payers			1,571			531			(1,120)			(312)			451			219
Contract diagnostics			274			368			—			—			274			368
			2,335			1,237			(1,140)			(338)			1,195			899
Clinical research grants and other			4			60			—			—			4			60
		$	2,339		$	1,297		$	(1,140)		$	(338)		$	1,199		$	959

(dollars in thousands)		For the Six Months Ended June 30,
								Contractual Allowances and						Revenues, net of Contractual
		Gross Revenues						adjustments						Allowances and adjustments
		2019			2018			2019			2018			2019			2018
Medicaid		$	15		$	41		$	(3)		$	(18)		$	12		$	23
Medicare			861			429			(17)			(14)			844			415
Self-pay			15			46			—			—			15			46
Third party payers			2,588			848			(1,781)			(498)			807			350
Contract diagnostics			427			856			—			—			427			856
			3,906			2,220			(1,801)			(530)			2,105			1,690
Clinical research grants and other			11			65			—			—			11			65
		$	3,917		$	2,285		$	(1,801)		$	(530)		$	2,116		$	1,755

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

		For the Three Months Ended June 30,
		Revenues, net of
(dollars in thousands)		Contractual Allowances						Allowances for doubtful
		and adjustments						accounts						Total
		2019			2018			2019			2018			2019			2018
Medicaid		$	9		$	11		$	(9)		$	(12)		$	—		$	(1)
Medicare			450			281			(68)			(42)			382			239
Self-pay			11			20			—			—			11			20
Third party payers			451			219			(180)			(88)			271			131
Contract diagnostics			274			368			—			—			274			368
			1,195			899			(257)			(142)			938			757
Clinical research grants and other			4			60			—			—			4			60
		$	1,199		$	959		$	(257)		$	(142)		$	942		$	817

		For the Six Months Ended June 30,
		Revenues, net of
(dollars in thousands)		Contractual Allowances						Allowances for doubtful
		and adjustments						accounts						Total
		2019			2018			2019			2018			2019			2018
Medicaid		$	12		$	23		$	(12)		$	(23)		$	—		$	—
Medicare			844			415			(127)			(62)			717			353
Self-pay			15			46			—			—			15			46
Third party payers			807			350			(322)			(141)			485			209
Contract diagnostics			427			856			—			—			427			856
			2,105			1,690			(461)			(226)			1,644			1,464
Clinical research grants and other			11			65			—			—			11			65
		$	2,116		$	1,755		$	(461)		$	(226)		$	1,655		$	1,529

Schedule of Receivables

(dollars in thousands)		June 30, 2019			December 31, 2018
Medicaid		$	90		$	82
Medicare			770			633
Self-pay			73			108
Third party payers			1,852			1,382
Contract diagnostic services			269			193
Other			—			—
		$	3,054		$	2,398
Less allowance for doubtful accounts			(2,171)			(1,708)
Accounts receivable, net		$	883		$	690

Schedule of Allowance for Doubtful Accounts

					Allowance for
					Doubtful
(dollars in thousands)					Accounts
Balance, January 1, 2019					$	(1,708)
Collection Allowance:
Medicaid		$	(12)
Medicare			(127)
Third party payers			(322)
			(461)
Bad debt expense		$	(2)
Total charges						(463)
Balance, June 30, 2019					$	(2,171)

Schedule of Customer Revenue and Accounts Receivable Concentrations

Customer revenue and accounts receivable concentration amounted to the following for the identified periods.

		Three Months Ended					Six Months Ended
		June 30,					June 30,
		2019		2018			2019		2018
Percentage of net sales by customer:
Customer A		29	%	40	%		26	%	44	%
Customer B		11	%	*			*		*
* represents less than 10%

		June 30,			December 31,
		2019			2018
Percentage of total accounts receivable by customer:
Customer A		28	%		23	%
Customer B		*			*
* represents less than 10%

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