XML 60 R49.htm IDEA: XBRL DOCUMENT v3.20.2

Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value Measurements
Total	$ 3,971	$ 4,543
Level 1 [Member]
Fair Value Measurements
Total
Level 2 [Member]
Fair Value Measurements
Total	3,971	4,543
Level 3 [Member]
Fair Value Measurements
Total
Corporate bonds and notes [Member]
Fair Value Measurements
Total	1,945	1,832
Corporate bonds and notes [Member] | Level 1 [Member]
Fair Value Measurements
Total
Corporate bonds and notes [Member] | Level 2 [Member]
Fair Value Measurements
Total	1,945	1,832
Corporate bonds and notes [Member] | Level 3 [Member]
Fair Value Measurements
Total
Municipal bonds [Member]
Fair Value Measurements
Total	2,026	2,711
Municipal bonds [Member] | Level 1 [Member]
Fair Value Measurements
Total
Municipal bonds [Member] | Level 2 [Member]
Fair Value Measurements
Total	2,026	2,711
Municipal bonds [Member] | Level 3 [Member]
Fair Value Measurements
Total

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

+ Details

Name:	us-gaap_AvailableForSaleSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: