2023 Q4 Form 20-F Financial Statement

#000110465924051943 Filed on April 25, 2024

View on sec.gov

Income Statement

Concept 2023 Q4 2023 Q1 2023
Revenue $9.163M $9.163M
YoY Change -91.05% -38.25%
Cost Of Revenue $6.669M $6.669M
YoY Change -93.52% -55.31%
Gross Profit $2.494M $2.494M
YoY Change -529.26% -3069.05%
Gross Profit Margin 27.22% 27.22%
Selling, General & Admin $6.315M $6.315M
YoY Change -89.53% -27.8%
% of Gross Profit 253.21% 253.21%
Research & Development $484.0K $484.0K
YoY Change
% of Gross Profit 19.41% 19.41%
Depreciation & Amortization $2.094M $18.00K
YoY Change -91.89% -92.04%
% of Gross Profit 83.96% 0.72%
Operating Expenses $6.799M $6.799M
YoY Change -88.73% -27.7%
Operating Profit -$4.305M -$4.305M
YoY Change -92.93% -54.63%
Interest Expense -$57.00K -$57.00K
YoY Change -91.83% -43.56%
% of Operating Profit
Other Income/Expense, Net -$199.0K $1.144M
YoY Change -105.77% 384.75%
Pretax Income -$3.161M -$3.161M
YoY Change -95.05% -95.05%
Income Tax $14.00K $14.00K
% Of Pretax Income
Net Earnings -$3.175M -$3.175M
YoY Change -96.73% -96.78%
Net Earnings / Revenue -34.65% -34.65%
Basic Earnings Per Share -$0.06
Diluted Earnings Per Share -$0.06 -$0.06
COMMON SHARES
Basic Shares Outstanding 56.33M
Diluted Shares Outstanding 56.33M

Balance Sheet

Concept 2023 Q4 2023 Q1 2023
SHORT-TERM ASSETS
Cash & Short-Term Investments $4.834M $4.834M
YoY Change -78.82% -78.82%
Cash & Equivalents $4.834M $4.834M
Short-Term Investments
Other Short-Term Assets $16.00K $5.399M
YoY Change 14.29% -82.5%
Inventory
Prepaid Expenses
Receivables $2.280M $2.280M
Other Receivables $0.00 $0.00
Total Short-Term Assets $12.51M $12.51M
YoY Change -20.92% -88.54%
LONG-TERM ASSETS
Property, Plant & Equipment $6.000K $4.902M
YoY Change -99.69% -90.11%
Goodwill
YoY Change
Intangibles $522.0K
YoY Change -85.9%
Long-Term Investments
YoY Change
Other Assets $2.629M $2.629M
YoY Change -80.65% 59.43%
Total Long-Term Assets $8.053M $8.053M
YoY Change -16.91% -87.95%
TOTAL ASSETS
Total Short-Term Assets $12.51M $12.51M
Total Long-Term Assets $8.053M $8.053M
Total Assets $20.57M $20.57M
YoY Change -19.4% -88.31%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $1.386M $1.386M
YoY Change -42.08% -91.6%
Accrued Expenses $1.468M $3.954M
YoY Change -94.3% -90.37%
Deferred Revenue
YoY Change
Short-Term Debt $3.939M $3.939M
YoY Change 30.04% -81.15%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities $9.789M $9.789M
YoY Change -17.77% -88.08%
LONG-TERM LIABILITIES
Long-Term Debt $0.00 $0.00
YoY Change
Other Long-Term Liabilities $4.349M $4.349M
YoY Change -89.02% -89.02%
Total Long-Term Liabilities $4.349M $4.349M
YoY Change -24.29% -89.02%
TOTAL LIABILITIES
Total Short-Term Liabilities $9.789M $9.789M
Total Long-Term Liabilities $4.349M $4.349M
Total Liabilities $14.14M $14.14M
YoY Change -19.89% -88.39%
SHAREHOLDERS EQUITY
Retained Earnings -$510.6M
YoY Change 0.37%
Common Stock $517.0M
YoY Change 0.36%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $6.428M $6.428M
YoY Change
Total Liabilities & Shareholders Equity $20.57M $20.57M
YoY Change -19.4% -88.31%

Cashflow Statement

Concept 2023 Q4 2023 Q1 2023
OPERATING ACTIVITIES
Net Income -$3.175M -$3.175M
YoY Change -96.73% -96.78%
Depreciation, Depletion And Amortization $2.094M $18.00K
YoY Change -91.89% -92.04%
Cash From Operating Activities $2.643M -$290.0K
YoY Change -109.98% -99.55%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities $0.00 $0.00
YoY Change -100.0% -100.0%
Cash From Investing Activities $0.00 $0.00
YoY Change -100.0% -100.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net $1.449M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities -4.950M 2.803M
YoY Change -127.69% -91.96%
NET CHANGE
Cash From Operating Activities 2.643M -290.0K
Cash From Investing Activities 0.000 0.000
Cash From Financing Activities -4.950M 2.803M
Net Change In Cash -2.307M 2.385M
YoY Change -96.65% -110.03%
FREE CASH FLOW
Cash From Operating Activities $2.643M -$290.0K
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2022Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2023Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2022Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2023Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2022Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2023Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2023 dei Entity Central Index Key
EntityCentralIndexKey
0001494558
CY2023 dei Document Fiscal Period Focus
DocumentFiscalPeriodFocus
FY
CY2023 dei Amendment Flag
AmendmentFlag
false
CY2023 dei Entity Registrant Name
EntityRegistrantName
Ambow Education Holding Ltd.
CY2023 dei Document Type
DocumentType
20-F
CY2023 dei Document Registration Statement
DocumentRegistrationStatement
false
CY2023 dei Document Annual Report
DocumentAnnualReport
true
CY2023 dei Document Period End Date
DocumentPeriodEndDate
2023-12-31
CY2023 dei Current Fiscal Year End Date
CurrentFiscalYearEndDate
--12-31
CY2023 dei Document Fiscal Year Focus
DocumentFiscalYearFocus
2023
CY2023 dei Document Transition Report
DocumentTransitionReport
false
CY2023 dei Document Shell Company Report
DocumentShellCompanyReport
false
CY2023 dei Entity File Number
EntityFileNumber
001-34824
CY2023 dei Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
E9
CY2023 dei Entity Address Address Line1
EntityAddressAddressLine1
19925 Stevens Creek Blvd
CY2023 dei Entity Address City Or Town
EntityAddressCityOrTown
Cupertino
CY2023 dei Entity Address State Or Province
EntityAddressStateOrProvince
CA
CY2023 dei Entity Address Postal Zip Code
EntityAddressPostalZipCode
95014
CY2023 dei Entity Address Country
EntityAddressCountry
US
CY2023 dei Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
No
CY2023 dei Entity Voluntary Filers
EntityVoluntaryFilers
No
CY2023 dei Entity Current Reporting Status
EntityCurrentReportingStatus
Yes
CY2023 dei Entity Interactive Data Current
EntityInteractiveDataCurrent
Yes
CY2023 dei Entity Filer Category
EntityFilerCategory
Non-accelerated Filer
CY2023 dei Entity Emerging Growth Company
EntityEmergingGrowthCompany
false
CY2023 dei Icfr Auditor Attestation Flag
IcfrAuditorAttestationFlag
false
CY2023 dei Document Fin Stmt Error Correction Flag
DocumentFinStmtErrorCorrectionFlag
false
CY2023 dei Document Accounting Standard
DocumentAccountingStandard
U.S. GAAP
CY2023 dei Entity Shell Company
EntityShellCompany
false
CY2023 dei Auditor Firm
AuditorFirmId
5395
CY2023 dei Auditor Name
AuditorName
Marcum Asia CPAs LLP
CY2023 dei Auditor Location
AuditorLocation
New York, NY
CY2022Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
3308000
CY2023Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
4834000
CY2022Q4 us-gaap Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
4362000
CY2023Q4 us-gaap Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
5221000
CY2022Q4 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
1983000
CY2023Q4 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
2280000
CY2022Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
6171000
CY2023Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
178000
CY2022Q4 us-gaap Assets Current
AssetsCurrent
15824000
CY2023Q4 us-gaap Assets Current
AssetsCurrent
12513000
CY2022Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
276000
CY2023Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
6000
CY2022Q4 us-gaap Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
537000
CY2023Q4 us-gaap Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
522000
CY2022Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
1970000
CY2023Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
2629000
CY2022Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
6909000
CY2023Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
4896000
CY2022Q4 us-gaap Assets Noncurrent
AssetsNoncurrent
9692000
CY2023Q4 us-gaap Assets Noncurrent
AssetsNoncurrent
8053000
CY2022Q4 us-gaap Assets
Assets
25516000
CY2023Q4 us-gaap Assets
Assets
20566000
CY2022Q4 us-gaap Short Term Borrowings
ShortTermBorrowings
3029000
CY2023Q4 us-gaap Short Term Borrowings
ShortTermBorrowings
3939000
CY2022Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
2393000
CY2023Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
1386000
CY2022Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
3737000
CY2023Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
1468000
CY2022Q4 us-gaap Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
528000
CY2023Q4 us-gaap Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
510000
CY2022Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
2218000
CY2023Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
2486000
CY2022Q4 us-gaap Liabilities Current
LiabilitiesCurrent
11905000
CY2023Q4 us-gaap Liabilities Current
LiabilitiesCurrent
9789000
CY2022Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
5744000
CY2023Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
4349000
CY2022Q4 us-gaap Liabilities Noncurrent
LiabilitiesNoncurrent
5744000
CY2023Q4 us-gaap Liabilities Noncurrent
LiabilitiesNoncurrent
4349000
CY2022Q4 us-gaap Liabilities
Liabilities
17649000
CY2023Q4 us-gaap Liabilities
Liabilities
14138000
CY2022Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.003
CY2023Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.003
CY2022Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
1666667
CY2023Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
1666667
CY2022Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2023Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2022Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
515182000
CY2023Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
517031000
CY2022Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-507459000
CY2023Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-510634000
CY2023Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-128000
CY2022Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
7867000
CY2023Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
6428000
CY2022Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
25516000
CY2023Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
20566000
CY2021 us-gaap Revenues
Revenues
17816000
CY2022 us-gaap Revenues
Revenues
14840000
CY2023 us-gaap Revenues
Revenues
9163000
CY2021 us-gaap Cost Of Revenue
CostOfRevenue
15393000
CY2022 us-gaap Cost Of Revenue
CostOfRevenue
14556000
CY2023 us-gaap Cost Of Revenue
CostOfRevenue
6669000
CY2021 us-gaap Gross Profit
GrossProfit
2423000
CY2022 us-gaap Gross Profit
GrossProfit
284000
CY2023 us-gaap Gross Profit
GrossProfit
2494000
CY2021 us-gaap Selling And Marketing Expense
SellingAndMarketingExpense
3133000
CY2022 us-gaap Selling And Marketing Expense
SellingAndMarketingExpense
1487000
CY2023 us-gaap Selling And Marketing Expense
SellingAndMarketingExpense
1051000
CY2021 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
7922000
CY2022 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
7628000
CY2023 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
5264000
CY2023 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
484000
CY2022 us-gaap Impairment Of Intangible Assets Finitelived
ImpairmentOfIntangibleAssetsFinitelived
657000
CY2021 us-gaap Operating Expenses
OperatingExpenses
11055000
CY2022 us-gaap Operating Expenses
OperatingExpenses
9772000
CY2023 us-gaap Operating Expenses
OperatingExpenses
6799000
CY2021 us-gaap Operating Income Loss
OperatingIncomeLoss
-8632000
CY2022 us-gaap Operating Income Loss
OperatingIncomeLoss
-9488000
CY2023 us-gaap Operating Income Loss
OperatingIncomeLoss
-4305000
CY2021 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
238000
CY2022 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-101000
CY2023 us-gaap Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
-57000
CY2021 us-gaap Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
-260000
CY2022 us-gaap Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
500000
CY2023 us-gaap Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
-199000
CY2021 us-gaap Gains Losses On Extinguishment Of Debt
GainsLossesOnExtinguishmentOfDebt
1460000
CY2022 us-gaap Gain Or Loss On Sale Of Stock In Subsidiary
GainOrLossOnSaleOfStockInSubsidiary
-163000
CY2023 us-gaap Gain Loss On Disposition Of Assets1
GainLossOnDispositionOfAssets1
1400000
CY2021 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
1438000
CY2022 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
236000
CY2023 us-gaap Nonoperating Income Expense
NonoperatingIncomeExpense
1144000
CY2021 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-7194000
CY2022 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-9252000
CY2023 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-3161000
CY2021 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
-505000
CY2023 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
14000
CY2021 us-gaap Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
-6689000
CY2022 us-gaap Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
-9252000
CY2023 us-gaap Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
-3175000
CY2021 us-gaap Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
7002000
CY2022 us-gaap Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
-5056000
CY2021 us-gaap Profit Loss
ProfitLoss
313000
CY2022 us-gaap Profit Loss
ProfitLoss
-14308000
CY2023 us-gaap Profit Loss
ProfitLoss
-3175000
CY2021 us-gaap Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest
IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
-157000
CY2022 us-gaap Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest
IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
-235000
CY2021 us-gaap Income Loss From Continuing Operations
IncomeLossFromContinuingOperations
-6689000
CY2022 us-gaap Income Loss From Continuing Operations
IncomeLossFromContinuingOperations
-9252000
CY2023 us-gaap Income Loss From Continuing Operations
IncomeLossFromContinuingOperations
-3175000
CY2021 us-gaap Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity
IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
7159000
CY2022 us-gaap Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity
IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
-4821000
CY2021 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
470000
CY2022 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-14073000
CY2023 us-gaap Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
-3175000
CY2021 us-gaap Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax
OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
-112000
CY2022 us-gaap Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax
OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
-339000
CY2021 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
-16000
CY2021 us-gaap Other Comprehensive Income Loss Tax
OtherComprehensiveIncomeLossTax
128000
CY2022 us-gaap Other Comprehensive Income Loss Tax
OtherComprehensiveIncomeLossTax
339000
CY2021 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
185000
CY2022 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-14647000
CY2023 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-3175000
CY2021 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-0.14
CY2022 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-0.19
CY2023 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-0.06
CY2021 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-0.14
CY2022 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-0.19
CY2023 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-0.06
CY2021 us-gaap Income Loss From Discontinued Operations Net Of Tax Per Basic Share
IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
0.15
CY2022 us-gaap Income Loss From Discontinued Operations Net Of Tax Per Basic Share
IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
-0.10
CY2021 us-gaap Income Loss From Discontinued Operations Net Of Tax Per Diluted Share
IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
0.15
CY2022 us-gaap Income Loss From Discontinued Operations Net Of Tax Per Diluted Share
IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
-0.10
CY2021 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
46654853
CY2022 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
49458266
CY2023 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
56333003
CY2021 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
46654853
CY2022 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
49458266
CY2023 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
56333003
CY2020Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
20400000
CY2021 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
139000
CY2021 us-gaap Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
-112000
CY2021 ambo Unrealized Gain On Investment Net Of Income Taxes
UnrealizedGainOnInvestmentNetOfIncomeTaxes
-16000
CY2021 ambo Noncontrolling Interest Decrease From Disposal
NoncontrollingInterestDecreaseFromDisposal
-526000
CY2021 ambo Noncontrolling Interest Increase From Capital Injection From Minority Shareholders
NoncontrollingInterestIncreaseFromCapitalInjectionFromMinorityShareholders
16000
CY2021 us-gaap Profit Loss
ProfitLoss
313000
CY2021Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
21266000
CY2021Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
21266000
CY2022 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
1083000
CY2022 us-gaap Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
-339000
CY2022 ambo Unrealized Gain On Investment Net Of Income Taxes
UnrealizedGainOnInvestmentNetOfIncomeTaxes
-17000
CY2022 ambo Noncontrolling Interest Increase From Capital Injection From Minority Shareholders
NoncontrollingInterestIncreaseFromCapitalInjectionFromMinorityShareholders
182000
CY2022 us-gaap Profit Loss
ProfitLoss
-14308000
CY2022Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
7867000
CY2022Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
7867000
CY2023 us-gaap Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
1864000
CY2023 us-gaap Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
-128000
CY2023 us-gaap Profit Loss
ProfitLoss
-3175000
CY2023Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
6428000
CY2021 us-gaap Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
-6689000
CY2022 us-gaap Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
-9252000
CY2023 us-gaap Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
-3175000
CY2021 us-gaap Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
7002000
CY2022 us-gaap Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
-5056000
CY2021 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
378000
CY2022 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
226000
CY2023 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
18000
CY2021 us-gaap Operating Lease Right Of Use Asset Amortization Expense
OperatingLeaseRightOfUseAssetAmortizationExpense
3390000
CY2022 us-gaap Operating Lease Right Of Use Asset Amortization Expense
OperatingLeaseRightOfUseAssetAmortizationExpense
3519000
CY2023 us-gaap Operating Lease Right Of Use Asset Amortization Expense
OperatingLeaseRightOfUseAssetAmortizationExpense
2076000
CY2021 us-gaap Gain Loss On Termination Of Lease
GainLossOnTerminationOfLease
0
CY2022 us-gaap Gain Loss On Termination Of Lease
GainLossOnTerminationOfLease
756000
CY2023 us-gaap Gain Loss On Termination Of Lease
GainLossOnTerminationOfLease
0
CY2021 us-gaap Share Based Compensation
ShareBasedCompensation
139000
CY2022 us-gaap Share Based Compensation
ShareBasedCompensation
1083000
CY2021 us-gaap Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
752000
CY2022 us-gaap Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
163000
CY2023 us-gaap Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
389000
CY2022 ambo Impairment Loss From Continuing Operations And Discontinued Operations
ImpairmentLossFromContinuingOperationsAndDiscontinuedOperations
657000
CY2021 ambo Interest Expenses
InterestExpenses
-12000
CY2021 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
-542000
CY2022 ambo Disposal Group Including Discontinued Operation Gain Loss On Disposal
DisposalGroupIncludingDiscontinuedOperationGainLossOnDisposal
-163000
CY2023 us-gaap Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
-267000
CY2021 us-gaap Gains Losses On Extinguishment Of Debt
GainsLossesOnExtinguishmentOfDebt
1460000
CY2021 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
1627000
CY2022 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
415000
CY2023 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
1384000
CY2021 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
-145000
CY2022 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
-788000
CY2023 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
-5993000
CY2021 us-gaap Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
-1100000
CY2022 us-gaap Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
-722000
CY2023 us-gaap Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
-39000
CY2021 us-gaap Increase Decrease In Accounts Payable Trade
IncreaseDecreaseInAccountsPayableTrade
1476000
CY2022 us-gaap Increase Decrease In Accounts Payable Trade
IncreaseDecreaseInAccountsPayableTrade
-237000
CY2023 us-gaap Increase Decrease In Accounts Payable Trade
IncreaseDecreaseInAccountsPayableTrade
-1007000
CY2021 us-gaap Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
3161000
CY2022 us-gaap Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
860000
CY2023 us-gaap Increase Decrease In Accrued Liabilities
IncreaseDecreaseInAccruedLiabilities
-2298000
CY2021 us-gaap Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
-153000
CY2023 us-gaap Increase Decrease In Accrued Income Taxes Payable
IncreaseDecreaseInAccruedIncomeTaxesPayable
-18000
CY2021 us-gaap Increase Decrease In Contract With Customer Liability
IncreaseDecreaseInContractWithCustomerLiability
86000
CY2022 us-gaap Increase Decrease In Contract With Customer Liability
IncreaseDecreaseInContractWithCustomerLiability
-781000
CY2021 us-gaap Increase Decrease In Operating Lease Liability
IncreaseDecreaseInOperatingLeaseLiability
-3309000
CY2022 us-gaap Increase Decrease In Operating Lease Liability
IncreaseDecreaseInOperatingLeaseLiability
-2386000
CY2023 us-gaap Increase Decrease In Operating Lease Liability
IncreaseDecreaseInOperatingLeaseLiability
-1190000
CY2021 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-3165000
CY2022 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-5646000
CY2023 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-290000
CY2021 us-gaap Cash Provided By Used In Operating Activities Discontinued Operations
CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
666000
CY2022 us-gaap Cash Provided By Used In Operating Activities Discontinued Operations
CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
-3602000
CY2023 us-gaap Cash Provided By Used In Operating Activities Discontinued Operations
CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
0
CY2021 us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
19000
CY2021 us-gaap Proceeds From Sale Of Intangible Assets
ProceedsFromSaleOfIntangibleAssets
13000
CY2021 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
32000
CY2022 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
0
CY2023 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
0
CY2021 us-gaap Cash Provided By Used In Investing Activities Discontinued Operations
CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
16789000
CY2022 us-gaap Cash Provided By Used In Investing Activities Discontinued Operations
CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
-19491000
CY2023 us-gaap Cash Provided By Used In Investing Activities Discontinued Operations
CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
0
CY2021 ambo Proceeds From Issuance Of Common Stock And Warrants
ProceedsFromIssuanceOfCommonStockAndWarrants
16000
CY2023 ambo Proceeds From Issuance Of Common Stock And Warrants
ProceedsFromIssuanceOfCommonStockAndWarrants
1864000
CY2022 us-gaap Proceeds From Short Term Debt
ProceedsFromShortTermDebt
3014000
CY2023 us-gaap Proceeds From Short Term Debt
ProceedsFromShortTermDebt
2439000
CY2023 us-gaap Repayments Of Short Term Debt
RepaymentsOfShortTermDebt
1500000
CY2021 ambo Funding Provided To Discontinued Operations
FundingProvidedToDiscontinuedOperations
-99000
CY2021 us-gaap Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
-83000
CY2022 us-gaap Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
3014000
CY2023 us-gaap Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
2803000
CY2021 us-gaap Cash Provided By Used In Financing Activities Discontinued Operations
CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
999000
CY2022 us-gaap Cash Provided By Used In Financing Activities Discontinued Operations
CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
2040000
CY2023 us-gaap Cash Provided By Used In Financing Activities Discontinued Operations
CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
0
CY2021 us-gaap Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
-2558000
CY2022 us-gaap Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
-100000
CY2023 us-gaap Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
-128000
CY2021 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
12680000
CY2022 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
-23785000
CY2023 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
2385000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
18775000
CY2021Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
31455000
CY2023Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
4834000
CY2022Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
7670000
CY2021Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
31455000
CY2022Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
7670000
CY2023Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
10055000
CY2021Q4 ambo Net Change In Cash Cash Equivalents And Restricted Cash Included In Assets Held For Sale
NetChangeInCashCashEquivalentsAndRestrictedCashIncludedInAssetsHeldForSale
29846000
CY2021Q4 ambo Cash Cash Equivalents And Restricted Cash From Continuing Operations
CashCashEquivalentsAndRestrictedCashFromContinuingOperations
1609000
CY2022Q4 ambo Cash Cash Equivalents And Restricted Cash From Continuing Operations
CashCashEquivalentsAndRestrictedCashFromContinuingOperations
7670000
CY2023Q4 ambo Cash Cash Equivalents And Restricted Cash From Continuing Operations
CashCashEquivalentsAndRestrictedCashFromContinuingOperations
10055000
CY2023 us-gaap Income Taxes Paid
IncomeTaxesPaid
27000
CY2022 us-gaap Interest Paid Net
InterestPaidNet
1000
CY2023 us-gaap Interest Paid Net
InterestPaidNet
164000
CY2022 ambo Derecognition Of Assets Other Than Cash Of Disposed Subsidiaries Or Deregistered Subsidiaries
DerecognitionOfAssetsOtherThanCashOfDisposedSubsidiariesOrDeregisteredSubsidiaries
62000
CY2022 ambo Derecognition Of Liabilities Of Disposed Subsidiary Or Deregistered Subsidiary Net Of Recognized Amount Due To Disposed Subsidiary Or Deregistered Subsidiary
DerecognitionOfLiabilitiesOfDisposedSubsidiaryOrDeregisteredSubsidiaryNetOfRecognizedAmountDueToDisposedSubsidiaryOrDeregisteredSubsidiary
86000
CY2021 ambo Operating Lease Right Of Use Assets Obtained In Exchange For New Operating Lease Liabilities
OperatingLeaseRightOfUseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities
1343000
CY2023 ambo Operating Lease Right Of Use Assets Obtained In Exchange For New Operating Lease Liabilities
OperatingLeaseRightOfUseAssetsObtainedInExchangeForNewOperatingLeaseLiabilities
129000
CY2022 ambo Receivable From Sale Of Discontinued Operations
ReceivableFromSaleOfDiscontinuedOperations
6058000
CY2023Q4 ambo Working Capital
WorkingCapital
2724000
CY2023Q4 us-gaap Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
6428000
CY2021 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-3165000
CY2022 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-5646000
CY2023 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-290000
CY2023Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
4834000
CY2023 us-gaap Use Of Estimates
UseOfEstimates
<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;padding-left:18pt;text-indent:-18pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;">c.    Use of estimates</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;">The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, judgments, and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses and the related disclosure of contingent assets and liabilities. On an on-going basis, the Group evaluates its estimates, including those related to the useful lives of long-lived assets including property and equipment, stock-based compensation, fair value of assets and liabilities acquired in business combinations, impairment of intangible assets and other long-lived assets, income taxes and provision for doubtful accounts. The Group bases its estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, when these carrying values are not readily available from other sources. Actual results may differ from these estimates.</p>
CY2023 us-gaap Prior Period Reclassification Adjustment Description
PriorPeriodReclassificationAdjustmentDescription
<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">e.    Reclassifications</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;padding-left:18pt;text-indent:-18pt;margin:0pt 0pt 12pt 0pt;"><span style="font-weight:normal;">Certain prior year amounts were reclassified to conform with current year’s presentation.</span></p>
CY2022Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
1106000
CY2023Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
533000
CY2023Q4 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
769000
CY2023 us-gaap Number Of Operating Segments
NumberOfOperatingSegments
1
CY2022Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
754000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
544000
CY2021 us-gaap Advertising Expense
AdvertisingExpense
1035000
CY2022 us-gaap Advertising Expense
AdvertisingExpense
27000
CY2023 us-gaap Advertising Expense
AdvertisingExpense
20000
CY2023 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
0
CY2023Q4 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
0
CY2023 us-gaap Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
0
CY2022Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
3308000
CY2022Q4 us-gaap Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
4362000
CY2023Q4 us-gaap Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
5221000
CY2022Q4 ambo Cash Cash Equivalents And Restricted Cash From Continuing Operations
CashCashEquivalentsAndRestrictedCashFromContinuingOperations
7670000
CY2023Q4 ambo Cash Cash Equivalents And Restricted Cash From Continuing Operations
CashCashEquivalentsAndRestrictedCashFromContinuingOperations
10055000
CY2022Q4 us-gaap Accounts Receivable Gross Current
AccountsReceivableGrossCurrent
3089000
CY2023Q4 us-gaap Accounts Receivable Gross Current
AccountsReceivableGrossCurrent
2813000
CY2022Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
1106000
CY2023Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
533000
CY2022Q4 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
1983000
CY2023Q4 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
2280000
CY2021Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
1086000
CY2022Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
1106000
CY2022 us-gaap Allowance For Doubtful Accounts Receivable Recoveries
AllowanceForDoubtfulAccountsReceivableRecoveries
235000
CY2023 us-gaap Allowance For Doubtful Accounts Receivable Recoveries
AllowanceForDoubtfulAccountsReceivableRecoveries
389000
CY2022 us-gaap Allowance For Doubtful Accounts Receivable Write Offs
AllowanceForDoubtfulAccountsReceivableWriteOffs
215000
CY2023 us-gaap Allowance For Doubtful Accounts Receivable Write Offs
AllowanceForDoubtfulAccountsReceivableWriteOffs
193000
CY2023 ambo Accounts Receivable Allowance For Credit Loss Reclassification To Other Noncurrent Assets
AccountsReceivableAllowanceForCreditLossReclassificationToOtherNoncurrentAssets
769000
CY2022Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
1106000
CY2023Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
533000
CY2022Q4 ambo Due From Third Parties Acquisitions Current
DueFromThirdPartiesAcquisitionsCurrent
6058000
CY2022Q4 us-gaap Supplies
Supplies
104000
CY2023Q4 us-gaap Supplies
Supplies
127000
CY2023Q4 ambo Prepaid For Technology Development
PrepaidForTechnologyDevelopment
29000
CY2022Q4 ambo Loans To Third Parties
LoansToThirdParties
6000
CY2023Q4 ambo Loans To Third Parties
LoansToThirdParties
6000
CY2022Q4 us-gaap Other Assets Current
OtherAssetsCurrent
3000
CY2023Q4 us-gaap Other Assets Current
OtherAssetsCurrent
16000
CY2022Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
6171000
CY2023Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
178000
CY2022Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
862000
CY2023Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
225000
CY2022Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
586000
CY2023Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
219000
CY2022Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
276000
CY2023Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
6000
CY2021 us-gaap Depreciation
Depreciation
231000
CY2022 us-gaap Depreciation
Depreciation
206000
CY2023 us-gaap Depreciation
Depreciation
3000
CY2021 us-gaap Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
0
CY2022 us-gaap Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
0
CY2023 us-gaap Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
0
CY2022Q4 us-gaap Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
836000
CY2023Q4 us-gaap Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
836000
CY2022Q4 us-gaap Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
299000
CY2023Q4 us-gaap Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
314000
CY2022Q4 us-gaap Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
537000
CY2023Q4 us-gaap Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
522000
CY2021 us-gaap Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
123000
CY2022 us-gaap Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
5000
CY2023 us-gaap Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
15000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
10000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
10000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
10000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
10000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
10000
CY2023Q4 us-gaap Finite Lived Intangible Assets Amortization Expense After Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
12000
CY2023Q4 us-gaap Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
62000
CY2022Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
1731000
CY2023Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
1714000
CY2023Q4 us-gaap Notes And Loans Receivable Gross Noncurrent
NotesAndLoansReceivableGrossNoncurrent
1467000
CY2022Q4 ambo Long Term Lease Deposits
LongTermLeaseDeposits
195000
CY2023Q4 ambo Long Term Lease Deposits
LongTermLeaseDeposits
194000
CY2022Q4 us-gaap Other Assets Miscellaneous Noncurrent
OtherAssetsMiscellaneousNoncurrent
44000
CY2023Q4 us-gaap Other Assets Miscellaneous Noncurrent
OtherAssetsMiscellaneousNoncurrent
23000
CY2022Q4 ambo Other Assets Non Current Before Allowance For Credit Loss
OtherAssetsNonCurrentBeforeAllowanceForCreditLoss
1970000
CY2023Q4 ambo Other Assets Non Current Before Allowance For Credit Loss
OtherAssetsNonCurrentBeforeAllowanceForCreditLoss
3398000
CY2023Q4 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
769000
CY2022Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
1970000
CY2023Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
2629000
CY2022Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
866000
CY2023Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
635000
CY2022Q4 ambo Payables For Purchase Of Equipment And Services Current
PayablesForPurchaseOfEquipmentAndServicesCurrent
391000
CY2022Q4 ambo Advance Payments Current
AdvancePaymentsCurrent
10000
CY2022Q4 ambo Due To Students Current
DueToStudentsCurrent
837000
CY2023Q4 ambo Due To Students Current
DueToStudentsCurrent
268000
CY2022Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
754000
CY2023Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
544000
CY2022Q4 ambo Accrued Loans From Third Parties Current
AccruedLoansFromThirdPartiesCurrent
707000
CY2022Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
172000
CY2023Q4 us-gaap Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
21000
CY2022Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
3737000
CY2023Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
1468000
CY2023Q1 us-gaap Shares Issued Price Per Share
SharesIssuedPricePerShare
0.80
CY2023Q1 us-gaap Proceeds From Issuance Or Sale Of Equity
ProceedsFromIssuanceOrSaleOfEquity
1849000
CY2023Q1 us-gaap Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
1449000
CY2023Q1 us-gaap Proceeds From Issuance Of Warrants
ProceedsFromIssuanceOfWarrants
400000
CY2022Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
0
CY2023Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
0
CY2022Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
109000
CY2023Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
1000
CY2022Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
309000
CY2023Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
346000
CY2022Q4 ambo Deferred Tax Assets Depreciation
DeferredTaxAssetsDepreciation
85000
CY2023Q4 ambo Deferred Tax Assets Depreciation
DeferredTaxAssetsDepreciation
84000
CY2022Q4 ambo Lease Liability
LeaseLiability
2228000
CY2023Q4 ambo Lease Liability
LeaseLiability
2095000
CY2022Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
5977000
CY2023Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
6661000
CY2023Q4 us-gaap Deferred Tax Assets In Process Research And Development
DeferredTaxAssetsInProcessResearchAndDevelopment
91000
CY2023Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
59000
CY2022Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
8708000
CY2023Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
9337000
CY2022Q4 ambo Deferred Tax Asset Valuation Allowance
DeferredTaxAssetValuationAllowance
6579000
CY2023Q4 ambo Deferred Tax Asset Valuation Allowance
DeferredTaxAssetValuationAllowance
7794000
CY2022Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
2129000
CY2023Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
1543000
CY2022Q4 ambo Deferred Tax Liabilities Unrealized Gains On Acquisition
DeferredTaxLiabilitiesUnrealizedGainsOnAcquisition
196000
CY2023Q4 ambo Deferred Tax Liabilities Unrealized Gains On Acquisition
DeferredTaxLiabilitiesUnrealizedGainsOnAcquisition
173000
CY2022Q4 ambo Right Of Use Assets
RightOfUseAssets
1933000
CY2023Q4 ambo Right Of Use Assets
RightOfUseAssets
1370000
CY2022Q4 us-gaap Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
2129000
CY2023Q4 us-gaap Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
1543000
CY2023Q4 us-gaap Operating Loss Carryforwards
OperatingLossCarryforwards
41777000
CY2021Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
4139000
CY2022Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
6579000
CY2022 us-gaap Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
2440000
CY2023 us-gaap Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
1215000
CY2022Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
6579000
CY2023Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
7794000
CY2021 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2022 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2023 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2021 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.02
CY2022 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.05
CY2023 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.07
CY2021 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense
EffectiveIncomeTaxRateReconciliationNondeductibleExpense
0.07
CY2022 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense
EffectiveIncomeTaxRateReconciliationNondeductibleExpense
0.04
CY2022 us-gaap Effective Income Tax Rate Reconciliation Tax Exempt Income
EffectiveIncomeTaxRateReconciliationTaxExemptIncome
0.04
CY2023 us-gaap Effective Income Tax Rate Reconciliation Tax Exempt Income
EffectiveIncomeTaxRateReconciliationTaxExemptIncome
0.02
CY2023 us-gaap Effective Income Tax Rate Reconciliation Prior Year Income Taxes
EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
-0.05
CY2021 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.23
CY2022 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.26
CY2023 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.31
CY2021 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.07
CY2021 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
-6737000
CY2022 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
-7305000
CY2023 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
-2843000
CY2021 us-gaap Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
-457000
CY2022 us-gaap Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
-1947000
CY2023 us-gaap Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
-318000
CY2021 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-7194000
CY2022 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-9252000
CY2023 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-3161000
CY2021 us-gaap Net Income Loss From Continuing Operations Available To Common Shareholders Diluted
NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted
-6689000
CY2021 us-gaap Net Income Loss From Continuing Operations Available To Common Shareholders Basic
NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic
-6689000
CY2022 us-gaap Net Income Loss From Continuing Operations Available To Common Shareholders Diluted
NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted
-9252000
CY2022 us-gaap Net Income Loss From Continuing Operations Available To Common Shareholders Basic
NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic
-9252000
CY2023 us-gaap Net Income Loss From Continuing Operations Available To Common Shareholders Diluted
NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted
-3175000
CY2023 us-gaap Net Income Loss From Continuing Operations Available To Common Shareholders Basic
NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic
-3175000
CY2021 us-gaap Net Income Loss From Discontinued Operations Available To Common Shareholders Diluted
NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted
7002000
CY2021 us-gaap Net Income Loss From Discontinued Operations Available To Common Shareholders Basic
NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic
7002000
CY2022 us-gaap Net Income Loss From Discontinued Operations Available To Common Shareholders Diluted
NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersDiluted
-5056000
CY2022 us-gaap Net Income Loss From Discontinued Operations Available To Common Shareholders Basic
NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic
-5056000
CY2021 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
46654853
CY2022 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
49458266
CY2023 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
56333003
CY2021 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
46654853
CY2022 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
49458266
CY2023 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
56333003
CY2021 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
-0.14
CY2021 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
-0.14
CY2022 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
-0.19
CY2022 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
-0.19
CY2023 us-gaap Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
-0.06
CY2023 us-gaap Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
-0.06
CY2021 us-gaap Income Loss From Discontinued Operations Net Of Tax Per Diluted Share
IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
0.15
CY2021 us-gaap Income Loss From Discontinued Operations Net Of Tax Per Basic Share
IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
0.15
CY2022 us-gaap Income Loss From Discontinued Operations Net Of Tax Per Diluted Share
IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
-0.10
CY2022 us-gaap Income Loss From Discontinued Operations Net Of Tax Per Basic Share
IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
-0.10
CY2021 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
0
CY2022 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
0
CY2023 us-gaap Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
0
CY2023Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
4349000
CY2022 us-gaap Operating Lease Expense
OperatingLeaseExpense
4314000
CY2023 us-gaap Operating Lease Expense
OperatingLeaseExpense
2348000
CY2022 us-gaap Operating Lease Payments
OperatingLeasePayments
2363000
CY2023 us-gaap Operating Lease Payments
OperatingLeasePayments
1451000
CY2022Q4 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P3Y1M28D
CY2023Q4 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P2Y2M12D
CY2022Q4 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.0425
CY2023Q4 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.0425
CY2021 us-gaap Operating Lease Impairment Loss
OperatingLeaseImpairmentLoss
0
CY2022 us-gaap Operating Lease Impairment Loss
OperatingLeaseImpairmentLoss
0
CY2023 us-gaap Operating Lease Impairment Loss
OperatingLeaseImpairmentLoss
0
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
4176000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
2415000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
465000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
31000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
8000
CY2023Q4 us-gaap Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
7095000
CY2023Q4 us-gaap Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
260000
CY2023Q4 us-gaap Operating Lease Liability
OperatingLeaseLiability
6835000
CY2023Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
2486000

Files In Submission

Name View Source Status
0001104659-24-051943-index-headers.html Edgar Link pending
0001104659-24-051943-index.html Edgar Link pending
0001104659-24-051943.txt Edgar Link pending
0001104659-24-051943-xbrl.zip Edgar Link pending
ambo-20231231.xsd Edgar Link pending
ambo-20231231x20f.htm Edgar Link pending
ambo-20231231x20f001.jpg Edgar Link pending
ambo-20231231x20f002.jpg Edgar Link pending
ambo-20231231x20f003.jpg Edgar Link pending
ambo-20231231xex11d1.htm Edgar Link pending
ambo-20231231xex12d1.htm Edgar Link pending
ambo-20231231xex12d2.htm Edgar Link pending
ambo-20231231xex13d1.htm Edgar Link pending
ambo-20231231xex13d2.htm Edgar Link pending
ambo-20231231xex15d1.htm Edgar Link pending
ambo-20231231xex15d1001.jpg Edgar Link pending
ambo-20231231xex2d5.htm Edgar Link pending
ambo-20231231xex8d1.htm Edgar Link pending
ambo-20231231xex97.htm Edgar Link pending
ambo-20231231_cal.xml Edgar Link unprocessable
ambo-20231231_def.xml Edgar Link unprocessable
ambo-20231231x20f_htm.xml Edgar Link completed
Financial_Report.xlsx Edgar Link pending
MetaLinks.json Edgar Link pending
R1.htm Edgar Link pending
R10.htm Edgar Link pending
R11.htm Edgar Link pending
R12.htm Edgar Link pending
R13.htm Edgar Link pending
R14.htm Edgar Link pending
R15.htm Edgar Link pending
R16.htm Edgar Link pending
R17.htm Edgar Link pending
R18.htm Edgar Link pending
R19.htm Edgar Link pending
R2.htm Edgar Link pending
R20.htm Edgar Link pending
R21.htm Edgar Link pending
R22.htm Edgar Link pending
R23.htm Edgar Link pending
R24.htm Edgar Link pending
R25.htm Edgar Link pending
R26.htm Edgar Link pending
R27.htm Edgar Link pending
R28.htm Edgar Link pending
R29.htm Edgar Link pending
R3.htm Edgar Link pending
R30.htm Edgar Link pending
R31.htm Edgar Link pending
R32.htm Edgar Link pending
R33.htm Edgar Link pending
R34.htm Edgar Link pending
R35.htm Edgar Link pending
R36.htm Edgar Link pending
R37.htm Edgar Link pending
R38.htm Edgar Link pending
R39.htm Edgar Link pending
R4.htm Edgar Link pending
R40.htm Edgar Link pending
R41.htm Edgar Link pending
R42.htm Edgar Link pending
R43.htm Edgar Link pending
R44.htm Edgar Link pending
R45.htm Edgar Link pending
R46.htm Edgar Link pending
R47.htm Edgar Link pending
R48.htm Edgar Link pending
R49.htm Edgar Link pending
R5.htm Edgar Link pending
R50.htm Edgar Link pending
R51.htm Edgar Link pending
R52.htm Edgar Link pending
R53.htm Edgar Link pending
ambo-20231231_pre.xml Edgar Link unprocessable
FilingSummary.xml Edgar Link unprocessable
R54.htm Edgar Link pending
R55.htm Edgar Link pending
R56.htm Edgar Link pending
R57.htm Edgar Link pending
R58.htm Edgar Link pending
R59.htm Edgar Link pending
R6.htm Edgar Link pending
R60.htm Edgar Link pending
R61.htm Edgar Link pending
R62.htm Edgar Link pending
R63.htm Edgar Link pending
R64.htm Edgar Link pending
R65.htm Edgar Link pending
R66.htm Edgar Link pending
R67.htm Edgar Link pending
R68.htm Edgar Link pending
R69.htm Edgar Link pending
R7.htm Edgar Link pending
R70.htm Edgar Link pending
R71.htm Edgar Link pending
R72.htm Edgar Link pending
R73.htm Edgar Link pending
R74.htm Edgar Link pending
R75.htm Edgar Link pending
R76.htm Edgar Link pending
R77.htm Edgar Link pending
R78.htm Edgar Link pending
R79.htm Edgar Link pending
R8.htm Edgar Link pending
R80.htm Edgar Link pending
R81.htm Edgar Link pending
R82.htm Edgar Link pending
R83.htm Edgar Link pending
R84.htm Edgar Link pending
R85.htm Edgar Link pending
R86.htm Edgar Link pending
R87.htm Edgar Link pending
R88.htm Edgar Link pending
R9.htm Edgar Link pending
report.css Edgar Link pending
Show.js Edgar Link pending
ambo-20231231_lab.xml Edgar Link unprocessable