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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Tables)

12 Months Ended

Dec. 31, 2019

SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE [Abstract]

Schedule of Net Revenues

Service revenue, net for the years ended December 31, 2019 and 2018 was as follows (prior-period amounts are not adjusted under the modified-retrospective method of adoption):

		For the Year Ended December 31,
(dollars in thousands)		Diagnostic Testing						Biomarker Testing						Total
		2019			2018			2019			2018			2019			2018
Medicaid		$	28		$	50		$	—		$	—		$	28		$	50
Medicare			1,669			1,000			—			—			1,669			1,000
Self-pay			34			138			—			—			34			138
Third party payers			1,725			960			—			—			1,725			960
Contract diagnostics			—			—			595			1,187			595			1,187
Service revenue, net		$	3,456		$	2,148		$	595		$	1,187		$	4,051		$	3,335

Schedule of Gross to Net Sales Adjustments

The following table presents our revenues initially recognized for each associated payer class during the year ended December 31, 2019 and 2018.

(dollars in thousands)		For the Year Ended December 31,
								Contractual Allowances and						Revenues, net of Contractual
		Gross Revenues						adjustments						Allowances and adjustments
		2019			2018			2019			2018			2019			2018
Medicaid		$	31		$	86		$	(3)		$	(36)		$	28		$	50
Medicare			1,686			1,019			(17)			(19)			1,669			1,000
Self-pay			34			138			—			—			34			138
Third party payers			5,785			2,358			(4,060)			(1,398)			1,725			960
Contract diagnostics			595			1,187			—			—			595			1,187
			8,131			4,788			(4,080)			(1,453)			4,051			3,335
Clinical research grants and other			44			113			—			—			44			113
		$	8,175		$	4,901		$	(4,080)		$	(1,453)		$	4,095		$	3,448

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

The following table presents our reported revenues net of the collection allowance and adjustments for the year ended December 31, 2019 and 2018.

		For the Year Ended December 31,
		Revenues, net of
(dollars in thousands)		Contractual Allowances						Allowances for doubtful
		and adjustments						accounts						Total
		2019			2018			2019			2018			2019			2018
Medicaid		$	28		$	50		$	(28)		$	(50)		$	—		$	—
Medicare			1,669			1,000			(251)			(150)			1,418			850
Self-pay			34			138			—			—			34			138
Third party payers			1,725			960			(689)			(384)			1,036			576
Contract diagnostics			595			1,187			—			—			595			1,187
			4,051			3,335			(968)			(584)			3,083			2,751
Clinical research grants and other			44			113			—			—			44			113
		$	4,095		$	3,448		$	(968)		$	(584)		$	3,127		$	2,864

Schedule of Receivables

The following summarizes the mix of receivables for the years ended December 31, 2019 and 2018:

(dollars in thousands)		December 31, 2019			December 31, 2018
Medicaid		$	107		$	82
Medicare			814			633
Self-pay			88			108
Third party payers			2,203			1,382
Contract diagnostic services			36			193
		$	3,248		$	2,398
Less allowance for doubtful accounts			(2,674)			(1,708)
Accounts receivable, net		$	574		$	690

Schedule of Allowance for Doubtful Accounts

The following table presents the roll-forward of the allowance for doubtful accounts for the year ended December 31, 2019:

					Allowance for
					Doubtful
(dollars in thousands)					Accounts
Balance, January 1, 2019					$	(1,708)
Collection Allowance:
Medicaid		$	(28)
Medicare			(251)
Third party payers			(689)
			(968)
Bad debt expense		$	2
Total charges						(966)
Balance, December 31, 2019					$	(2,674)

Schedule of Customer Revenue and Accounts Receivable Concentrations

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

		Year Ended
		December 31,
		2019		2018
Percentage of net sales by customer:
Customer A		19	%	33	%
Customer B		11		*
Customer C		*		*
* represents less than 10%

		December 31,			December 31,
		2019			2018
Percentage of total accounts receivable by customer:
Customer A		*			23	%
Customer B		17	%		*
Customer C		12	%		*
* represents less than 10%

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