Equipment wear period.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Number Of Positions Furloughed, Period Percent

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period From Device Applied To The Time The Report Is Posted

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Summary of significant accounting policies.

+ References

No definition available.

+ Details

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- Definition

The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-Paragraph 42
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-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Name Accounting Standards Codification
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-Section 65
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-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(a)(4))
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-Name Accounting Standards Codification
-Topic 944
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-Section 65
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-Section S99
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-Subparagraph (SX 210.3-04)
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- Details

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- Details

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- Details

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Balance Type:
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- Details

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- Details

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- Details

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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Jan. 01, 2020
Summary Of Significant Accounting Policies [Line Items]
Accumulated deficit	$ (295,033)			$ (295,033)		$ (260,393)
Total revenue recognized that was included in contract liability				$ 1,200	$ 1,200
Employee Severance \| COVID-19 disruption and recovery
Summary Of Significant Accounting Policies [Line Items]
Employees furloughed (as a percent)		5.00%
Employees laid-off (as a percent)		2.00%
Cumulative Effect, Period Of Adoption, Adjustment
Summary Of Significant Accounting Policies [Line Items]
Accumulated deficit							$ 500
Allowance for doubtful accounts							$ 500
Zio XT service
Summary Of Significant Accounting Policies [Line Items]
Equipment wear period (in days)				14 days
Period from device applied to the time the report is posted (in days)				20 days
Revenue \| Customer Concentration Risk \| Federal Government Agencies
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk (in percentage)	28.00%		28.00%	27.00%	27.00%
Accounts Receivable \| Customer Concentration Risk \| Federal Government Agencies
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk (in percentage)				22.00%		20.00%