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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Schedule of Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported on the Consolidated Balance Sheets that agrees to the amounts included in the Consolidated Statement of Cash Flows.

			December 31,
(in millions)			2023						2022						2021
Cash and cash equivalents			$	132.1					$	56.9					$	257.4
Restricted cash			8.8						9.5						1.4
Total cash, cash equivalents, and restricted cash			$	140.9					$	66.4					$	258.8

Schedule of Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported on the Consolidated Balance Sheets that agrees to the amounts included in the Consolidated Statement of Cash Flows.

			December 31,
(in millions)			2023						2022						2021
Cash and cash equivalents			$	132.1					$	56.9					$	257.4
Restricted cash			8.8						9.5						1.4
Total cash, cash equivalents, and restricted cash			$	140.9					$	66.4					$	258.8

Schedule of Revenue by Type

The following table presents detail regarding the composition of the Company’s total revenue by product type for the years ended December 31, 2023, 2022, and 2021:

			Years Ended December 31,
(In millions)			2023						2022						2021
Testing revenues:
Hereditary Cancer			$	327.8					$	305.5					$	316.3
Tumor Profiling			135.6						128.6						120.9
Prenatal			151.3						116.4						106.8
Pharmacogenomics			138.5						127.6						93.7
Autoimmune			—						0.3						28.2
Other			—						—						0.5
Total testing revenue			753.2						678.4						666.4
Other revenue			—						—						24.2
Total revenue			$	753.2					$	678.4					$	690.6

Schedule of Revenue by Geographical Region

In addition, the following tables reconcile revenue by geographical region, either U.S. or rest of world ("RoW"), to total revenue:

			Years Ended December 31,
			2023																		2022																		2021
(in millions)			U.S.						RoW						Total						U.S.						RoW						Total						U.S.						RoW						Total
Testing revenues:
Hereditary Cancer			$	280.5					$	47.3					$	327.8					$	263.5					$	42.0					$	305.5					$	271.0					$	45.3					$	316.3
Tumor Profiling			102.1						33.5						135.6						84.5						44.1						128.6						80.4						40.5						120.9
Prenatal			150.6						0.7						151.3						115.6						0.8						116.4						106.2						0.6						106.8
Pharmacogenomics			138.5						—						138.5						127.6						—						127.6						93.7						—						93.7
Autoimmune			—						—						—						0.3						—						0.3						28.2						—						28.2
Other			—						—						—						—						—						—						—						0.5						0.5
Total testing revenue			671.7						81.5						753.2						591.5						86.9						678.4						579.5						86.9						666.4
Other revenue			—						—						—						—						—						—						24.2						—						24.2
Total revenue			$	671.7					$	81.5					$	753.2					$	591.5					$	86.9					$	678.4					$	603.7					$	86.9					$	690.6

Schedule of Reconciliation of Deferred Revenue Balances

A reconciliation of the beginning and ending balances of deferred revenue is shown in the table below:

			Years Ended December 31,
(in millions)			2023						2022						2021
Deferred revenue - beginning balance			$	0.6					$	5.2					$	32.7
Revenue recognized			(0.5)						(4.9)						(40.5)
Prepayments			0.4						0.3						14.0
Divestitures			—						—						(1.0)
Deferred revenue - ending balance			$	0.5					$	0.6					$	5.2

Schedule of Reconciliation of Denominators of Basic and Diluted Earnings Per Share Computations

The following is a reconciliation of the denominators of the basic and diluted earnings per share computations:

			Years Ended December 31,
(in millions)			2023						2022						2021
Denominator:
Weighted-average shares outstanding used to compute basic EPS			82.8						80.6						78.0
Effect of dilutive stock options and RSUs			—						—						—
Weighted-average shares outstanding and dilutive securities used to compute diluted EPS			82.8						80.6						78.0

Schedule of Potential Dilutive Common Shares

These potential dilutive shares of common stock, which may be dilutive to future diluted earnings per share, are as follows:

			Years Ended December 31,
(in millions)			2023						2022						2021
Anti-dilutive options and RSUs excluded from EPS computation			5.1						4.4						4.5

Schedule of Cumulative Translation Adjustments Included in Accumulated Other Comprehensive Loss

The following table shows the cumulative translation adjustments included in Accumulated other comprehensive loss (in millions):

Ending balance December 31, 2022			$	(6.2)
Period translation adjustments			2.1
Reclassification of cumulative translation adjustment to income upon liquidation of an investment in a foreign entity			0.4
Ending balance December 31, 2023			$	(3.7)

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