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ACQUISITIONS - CAS Medical Systems, Inc. (Details) - CAS Medical Systems, Inc. - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Apr. 18, 2019	Feb. 11, 2019	Dec. 31, 2019
Business Acquisition [Line Items]
Consideration per share to be transferred (in dollars per share)		$ 2.45
Acquisition price, subject uncertain adjustments		$ 100.0
Cash purchase price	$ 100.8
Acquisition-related costs			$ 2.0
Developed technology (Note 4)
Business Acquisition [Line Items]
Weighted average useful life	14 years
Customer Relationships
Business Acquisition [Line Items]
Weighted average useful life	10 years

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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