XML 50 R25.htm IDEA: XBRL DOCUMENT v3.20.4

Cash Equivalents and Investments (Tables)

12 Months Ended

Dec. 31, 2020

Cash Equivalents And Investments [Abstract]

Schedule of Fair Value Cash Equivalents and Available-for-sale Investments

The fair value of cash equivalents and available-for-sale investments at December 31, 2020 and 2019, were as follows (in thousands):

			December 31, 2020
			Amortized Cost						Gross Unrealized												Estimated Fair Value
									Gains						Losses
Money market funds			$	59,823					$	—					$	—					$	59,823
U.S. government securities			190,663						16						(2)						190,677
Corporate notes			26,426						2						(5)						26,423
Commercial paper			29,489						—						—						29,489
Total available-for-sale marketable debt securities			$	306,401					$	18					$	(7)					$	306,412
Classified as:
Cash equivalents																					$	59,823
Short-term investments																					246,589
Long-term investments																					—
Total cash equivalents and available-for-sale investments																					$	306,412

			December 31, 2019
			Amortized Cost						Gross Unrealized												Estimated Fair Value
									Gains						Losses
Money market funds			$	13,897					$	—					$	—					$	13,897
U.S. government securities			77,329						72						(1)						77,400
Corporate notes			14,955						11						—						14,966
Commercial paper			35,753						—						—						35,753
Total available-for-sale marketable debt securities			$	141,934					$	83					$	(1)					$	142,016
Classified as:
Cash equivalents																					$	13,897
Short-term investments																					120,089
Long-term investments																					8,030
Total cash equivalents and available-for-sale investments																					$	142,016

Schedule of Fair Value Cash Equivalents, Short-term, and Long-term Marketable Securities Classified by Maturity

The following table summarizes the fair value of the Company's cash equivalents, short-term and long-term marketable securities classified by maturity (in thousands):

			December 31,
			2020						2019
Due within one year			$	306,412					$	133,986
Due after one year through three years			—						8,030
Total cash equivalents and available-for-sale investments			$	306,412					$	142,016

Schedule of Available-for-Sale Securities in an Unrealized Loss Position

The following tables present the Company's available-for-sale securities that were in an unrealized loss position as of  December 31, 2020 (in thousands):

			December 31, 2020
			Less than 12 months												12 Months or Greater												Total
Assets			Fair Value						Unrealized Loss						Fair Value						Unrealized Loss						Fair Value						Unrealized Loss
U.S. government securities			$	28,487					$	(2)					$	—					$	—					$	28,487					$	(2)
Corporate notes			13,883						(5)						—						—						13,883						(5)
Total			$	42,370					$	(7)					$	—					$	—					$	42,370					$	(7)

X

- Definition

Cash Equivalents and Investments.

+ References

No definition available.

+ Details

Name:	irtc_CashEquivalentsAndInvestmentsAbstract
Namespace Prefix:	irtc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

+ References

No definition available.

+ Details

Name:	us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration