XML 53 R36.htm IDEA: XBRL DOCUMENT
v3.20.1

Cash, Cash Equivalents and Short-Term Investments - Schedule of Cash and Cash Equivalents and Short-term Investments by Significant Investment Category (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019
--- | --- | --- | ---
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Cash | $ 2,048 | $ 3,950 |
Short term investments Gross unrealized gains | 14 | 10 |
Short term investments Gross unrealized losses | (21) | (2) |
Short term investments | 11,016 | 21,686 |
Cash and cash equivalents and Short term investments, Amortized cost | 33,556 | 34,875 |
Cash and cash equivalents and Short term investments, Estimated fair value | 33,549 | 34,883 |
Cash and cash equivalents | 22,533 | 13,197 | $ 11,748
Level 1 |  |  |
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Short term investments Gross unrealized gains | 14 | 2 |
Short term investments Gross unrealized losses |  | (1) |
Cash equivalents and Short term investments, Estimated Fair Value | 22,557 | 8,579 |
Cash equivalents and Short term investments, Amortized cost | 22,543 | 8,578 |
Level 2 |  |  |
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Short term investments Gross unrealized gains |  | 8 |
Short term investments Gross unrealized losses | (21) | (1) |
Short term investments | 8,944 | 18,607 |
Cash equivalents and Short term investments, Estimated Fair Value | 8,944 | 22,354 |
Cash and cash equivalents |  | 3,747 |
Cash equivalents and Short term investments, Amortized cost | 8,965 | 22,347 |
Money Market Funds | Level 1 |  |  |
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Cash equivalents | 20,485 | 5,500 |
Repurchase Agreements | Level 2 |  |  |
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Cash equivalents |  | 3,000 |
US Treasury Securities | Level 1 |  |  |
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Short Term Investments Amortized cost | 2,058 | 3,078 |
Short term investments Gross unrealized gains | 14 | 2 |
Short term investments Gross unrealized losses |  | (1) |
Short term investments | 2,072 | 3,079 |
Commercial Paper | Level 2 |  |  |
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Cash equivalents |  | 747 |
Short Term Investments Amortized cost | 1,498 | 8,920 |
Short term investments | 1,498 | 8,173 |
Cash equivalents and Short term investments, Estimated Fair Value | 1,498 | 8,920 |
Corporate Debt Securities | Level 2 |  |  |
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Short Term Investments Amortized cost | 4,456 | 5,922 |
Short term investments Gross unrealized gains |  | 5 |
Short term investments Gross unrealized losses | (8) | (1) |
Short term investments | 4,448 | 5,926 |
Asset-backed Securities | Level 2 |  |  |
Cash And Cash Equivalents And Short Term Investments [Line Items] |  |  |
Short Term Investments Amortized cost | 3,011 | 4,505 |
Short term investments Gross unrealized gains |  | 3 |
Short term investments Gross unrealized losses | (13) |  |
Short term investments | 2,998 | 4,508 |
Cash equivalents and Short term investments, Estimated Fair Value | $ 2,998 | $ 4,508 |

X
- Definition Cash and cash equivalents and short-term investments. + References No definition available. + Details
Name: | airg_CashAndCashEquivalentsAndShortTermInvestmentsLineItems
Namespace Prefix: | airg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash And Cash Equivalents At Carrying Value And Available For Sale Securities Debt Securities Current. + References No definition available. + Details
Name: | airg_CashAndCashEquivalentsAtCarryingValueAndAvailableForSaleSecuritiesDebtSecuritiesCurrent
Namespace Prefix: | airg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash And Cash Equivalents At Carrying Value Available And Available For Sale Debt Securities Amortized Cost Basis. + References No definition available. + Details
Name: | airg_CashAndCashEquivalentsAtCarryingValueAvailableAndAvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | airg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash equivalents at carrying value and available for sale debt securities amortized cost basis. + References No definition available. + Details
Name: | airg_CashEquivalentsAtCarryingValueAndAvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | airg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash equivalents at carrying value and available for sale securities debt securities current. + References No definition available. + Details
Name: | airg_CashEquivalentsAtCarryingValueAndAvailableForSaleSecuritiesDebtSecuritiesCurrent
Namespace Prefix: | airg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost 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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26626-111562 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118262064&loc=SL116631418-115840 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 45 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=118262064&loc=SL116631419-115840 + Details
Name: | us-gaap_Cash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + 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 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_InvestmentTypeAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_RepurchaseAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |