XML 47 R26.htm IDEA: XBRL DOCUMENT v3.10.0.1

Available-for-sale Securities and Fair Value on Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Summary of Available-for-Sale Securities

The following is a summary of available-for-sale securities at December 31, 2018 (in thousands):

		December 31, 2018
		Amortized Cost				Gross Unrealized Gain				Gross Unrealized Loss				Fair Value
Money market funds		$	6,167			$	—			$	—			$	6,167
United States government agency securities			15,971				—				(23	)			15,948
Corporate debt securities			73,028				2				(260	)			72,770
Total available-for-sale securities		$	95,166			$	2			$	(283	)		$	94,885

The following is a summary of available-for-sale securities at December 31, 2017 (in thousands):

		December 31, 2017
		Amortized Cost				Gross Unrealized Gain				Gross Unrealized Loss				Fair Value
Money market funds		$	3,758			$	—			$	—			$	3,758
United States government agency securities			11,252				—				(24	)			11,228
Corporate debt securities			35,858				—				(73	)			35,785
Total available-for-sale securities		$	50,868			$	—			$	(97	)		$	50,771

Available-for-Sale Debt Securities by Original Contractual Maturity

Available-for-sale securities at December 31, 2018 and 2017, consisted of the following by contractual maturity (in thousands):

		December 31, 2018								December 31, 2017
		Amortized Cost				Fair Value				Amortized Cost				Fair Value
One year or less		$	85,227			$	84,957			$	38,836			$	38,781
Greater than one year and less than five years			9,939				9,928				12,032				11,990
Total available-for-sale securities		$	95,166			$	94,885			$	50,868			$	50,771

Available-for-Sale Marketable Securities in Unrealized Position

The following tables show all available-for-sale marketable securities in an unrealized loss position for which an other-than-temporary impairment has not been recognized and the related gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

	December 31, 2018
	Less than 12 Months								12 Months or Greater								Total
	Fair Value				Unrealized Loss				Fair Value				Unrealized Loss				Fair Value				Unrealized Loss
United States government agency         securities	$	14,948			$	(22	)		$	999			$	(1	)		$	15,947			$	(23	)
Corporate debt securities		60,813				(231	)			9,976				(29	)			70,789				(260	)
Total available-for-sale securities	$	75,761			$	(253	)		$	10,975			$	(30	)		$	86,736			$	(283	)

	December 31, 2017
	Less than 12 Months								12 Months or Greater								Total
	Fair Value				Unrealized Loss				Fair Value				Unrealized Loss				Fair Value				Unrealized Loss
United States government agency     securities	$	8,729			$	(24	)		$	—			$	—			$	8,729			$	(24	)
Corporate debt securities		35,785				(73	)			—				—				35,785				(73	)
Total available-for-sale securities	$	44,514			$	(97	)		$	—			$	—			$	44,514			$	(97	)

Fair Values of Financial Assets and Liabilities

The fair values of the Company’s financial assets and liabilities were determined using the following inputs at December 31, 2018 (in thousands):

		Balance sheet						Quoted Prices in Active Markets for Identical Assets				Significant Other Observable Inputs				Significant Unobservable Inputs
		classification		Total				(Level 1)				(Level 2)				(Level 3)
Money market funds		Cash and cash equivalents		$	6,167			$	6,167			$	—			$	—
United States government agency     securities		Short-term investments			15,948				—				15,948				—
Corporate debt securities		Short-term investments			72,770				—				72,770				—
Total financial assets				$	94,885			$	6,167			$	88,718			$	—

The fair values of the Company’s financial assets and liabilities were determined using the following inputs at December 31, 2017 (in thousands):

		Balance sheet						Quoted Prices in Active Markets for Identical Assets				Significant Other Observable Inputs				Significant Unobservable Inputs
		classification		Total				(Level 1)				(Level 2)				(Level 3)
Money market funds		Cash and cash equivalents		$	3,758			$	3,758			$	—			$	—
United States government agency securities		Short-term investments			11,228				—				11,228				—
Corporate debt securities		Short-term investments			35,785				—				35,785				—
Total financial assets				$	50,771			$	3,758			$	47,013			$	—

X

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2C
-URI http://asc.fasb.org/extlink&oid=99377789&loc=SL7498348-110258

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_FairValueDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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

X

- Definition

Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

+ References

No definition available.

+ Details

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

X

- Definition

For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563

+ Details

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