$ERII
Energy Recovery, Inc. Stock $erii

$erii Overview Financials Valuation SEC Filings Company Website

2022 Q3 Form 10-Q Financial Statement

#000142151722000122 Filed on August 03, 2022

Income Statement

Concept	2022 Q3	2022 Q2	2021 Q4
Revenue	$30.46M	$20.29M	$33.58M
YoY Change	46.59%	-1.53%	27.04%
Cost Of Revenue	$9.417M	$6.920M	$10.42M
YoY Change	54.66%	-3.63%	27.06%
Gross Profit	$21.05M	$13.37M	$23.16M
YoY Change	43.24%	-0.4%	27.03%
Gross Profit Margin	69.09%	65.9%	68.97%
Selling, General & Admin	$12.31M	$10.85M	$10.45M
YoY Change	39.15%	24.44%	14.63%
% of Gross Profit	58.5%	81.1%	45.14%
Research & Development	$3.828M	$5.431M	$6.727M
YoY Change	-13.32%	22.76%	27.16%
% of Gross Profit	18.19%	40.61%	29.05%
Depreciation & Amortization	$1.297M	$900.0K	$1.798M
YoY Change	-7.88%	-34.92%	34.18%
% of Gross Profit	6.16%	6.73%	7.76%
Operating Expenses	$16.14M	$16.28M	$17.18M
YoY Change	21.67%	23.88%	19.25%
Operating Profit	$4.906M	-$2.904M	$5.973M
YoY Change	243.8%	-1111.85%	56.36%
Interest Expense	$259.0K	$166.0K	$25.00K
YoY Change	619.44%	225.49%	-75.0%
% of Operating Profit	5.28%		0.42%
Other Income/Expense, Net	$254.0K	$106.0K	-$10.00K
YoY Change	586.49%	171.79%	-50.0%
Pretax Income	$5.160M	-$2.798M	$5.988M
YoY Change	252.46%	-958.28%	53.54%
Income Tax	$371.0K	-$439.0K	$725.0K
% Of Pretax Income	7.19%		12.11%
Net Earnings	$4.789M	-$2.359M	$5.263M
YoY Change	347.15%	-320.67%	52.55%
Net Earnings / Revenue	15.72%	-11.63%	15.67%
Basic Earnings Per Share	$0.09	-$0.04
Diluted Earnings Per Share	$0.08	-$0.04	$89.91K
COMMON SHARES
Basic Shares Outstanding	55.79M shares	56.22M shares	56.72M shares
Diluted Shares Outstanding	57.37M shares	56.22M shares

Balance Sheet

Concept	2022 Q3	2022 Q2	2021 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$82.29M	$81.70M	$105.7M
YoY Change	-23.56%	-32.31%	-7.86%
Cash & Equivalents	$52.13M	$43.22M	$74.36M
Short-Term Investments	$30.16M	$38.48M	$31.33M
Other Short-Term Assets	$5.486M	$4.914M	$5.075M
YoY Change	-0.99%	31.78%	1.5%
Inventory	$32.13M	$28.24M	$20.38M
Prepaid Expenses
Receivables	$18.42M	$13.93M	$20.62M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$139.2M	$129.1M	$151.8M
YoY Change	-5.17%	-12.7%	5.99%
LONG-TERM ASSETS
Property, Plant & Equipment	$18.72M	$18.96M	$20.36M
YoY Change	-10.43%	-7.26%	0.92%
Goodwill	$12.79M	$12.79M	$12.79M
YoY Change	0.0%	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$4.271M	$4.809M	$2.298M
YoY Change	458.3%
Other Assets	$365.0K	$365.0K	$367.0K
YoY Change	0.0%	0.0%	-62.85%
Total Long-Term Assets	$60.90M	$62.40M	$61.93M
YoY Change	-1.74%	1.47%	1.32%
TOTAL ASSETS
Total Short-Term Assets	$139.2M	$129.1M	$151.8M
Total Long-Term Assets	$60.90M	$62.40M	$61.93M
Total Assets	$200.1M	$191.5M	$213.7M
YoY Change	-4.15%	-8.54%	4.59%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.931M	$2.716M	$909.0K
YoY Change	-47.28%	19.23%	-18.69%
Accrued Expenses	$11.96M	$10.09M	$14.68M
YoY Change	16.47%	11.37%	19.34%
Deferred Revenue	$2.157M	$1.507M	$3.318M
YoY Change	48.55%	34.91%	113.79%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$16.96M	$15.21M	$19.79M
YoY Change	4.59%	14.67%	25.79%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$127.0K	$227.0K	$247.0K
YoY Change	-76.91%	-60.25%	-52.32%
Total Long-Term Liabilities	$127.0K	$227.0K	$247.0K
YoY Change	-76.91%	-60.25%	-52.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$16.96M	$15.21M	$19.79M
Total Long-Term Liabilities	$127.0K	$227.0K	$247.0K
Total Liabilities	$30.82M	$29.62M	$34.91M
YoY Change	-3.84%	0.33%	6.79%
SHAREHOLDERS EQUITY
Retained Earnings	$47.43M	$42.64M	$37.10M
YoY Change	48.95%	38.57%	62.49%
Common Stock	$64.00K	$64.00K	$64.00K
YoY Change	1.59%	1.59%	3.23%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$80.46M	$53.83M
YoY Change		91.38%	76.58%
Treasury Stock Shares			6.721M shares
Shareholders Equity	$169.3M	$161.9M	$178.8M
YoY Change
Total Liabilities & Shareholders Equity	$200.1M	$191.5M	$213.7M
YoY Change	-4.15%	-8.54%	4.59%

Cashflow Statement

Concept	2022 Q3	2022 Q2	2021 Q4
OPERATING ACTIVITIES
Net Income	$4.789M	-$2.359M	$5.263M
YoY Change	347.15%	-320.67%	52.55%
Depreciation, Depletion And Amortization	$1.297M	$900.0K	$1.798M
YoY Change	-7.88%	-34.92%	34.18%
Cash From Operating Activities	-$1.211M	$9.081M	$6.232M
YoY Change	-71.49%	-20.97%	-4.42%
INVESTING ACTIVITIES
Capital Expenditures	-$563.0K	-$460.0K	-$1.780M
YoY Change	-77.02%	-74.71%	131.17%
Acquisitions
YoY Change
Other Investing Activities	$9.420M	$8.413M	$8.764M
YoY Change	-136.97%	-391.31%	68.54%
Cash From Investing Activities	$8.857M	$7.953M	$6.984M
YoY Change	-131.71%	-268.96%	57.65%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	1.228M	-18.35M	-4.575M
YoY Change	-122.91%	105.73%	-246.17%
NET CHANGE
Cash From Operating Activities	-1.211M	9.081M	6.232M
Cash From Investing Activities	8.857M	7.953M	6.984M
Cash From Financing Activities	1.228M	-18.35M	-4.575M
Net Change In Cash	8.874M	-1.311M	8.641M
YoY Change	-123.64%	-38.54%	-38.63%
FREE CASH FLOW
Cash From Operating Activities	-$1.211M	$9.081M	$6.232M
Capital Expenditures	-$563.0K	-$460.0K	-$1.780M
Free Cash Flow	-$648.0K	$9.541M	$8.012M
YoY Change	-63.94%	-28.32%	9.9%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001421517
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Amendment Flag AmendmentFlag	false
CY2022Q2	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P6M
CY2022Q2	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2022Q2	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2022-06-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-34112
	dei	Entity Registrant Name EntityRegistrantName	Energy Recovery, Inc.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	01-0616867
	dei	Entity Address Address Line1 EntityAddressAddressLine1	1717 Doolittle Drive
	dei	Entity Address City Or Town EntityAddressCityOrTown	San Leandro
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	94577
	dei	City Area Code CityAreaCode	510
	dei	Local Phone Number LocalPhoneNumber	483-7370
	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value
	dei	Trading Symbol TradingSymbol	ERII
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2022Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	55787098	shares
CY2022Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	43223000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	74358000	usd
CY2022Q2	us-gaap	Short Term Investments ShortTermInvestments	38479000	usd
CY2021Q4	us-gaap	Long Term Investments LongTermInvestments	2298000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	14653000	usd
CY2021Q4	us-gaap	Short Term Investments ShortTermInvestments	31332000	usd
CY2022Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	13926000	usd
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	20615000	usd
CY2022Q2	us-gaap	Inventory Net InventoryNet	28235000	usd
CY2021Q4	us-gaap	Inventory Net InventoryNet	20383000	usd
CY2022Q2	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	5213000	usd
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	5075000	usd
CY2022Q2	us-gaap	Assets Current AssetsCurrent	129076000	usd
CY2021Q4	us-gaap	Assets Current AssetsCurrent	151763000	usd
CY2022Q2	us-gaap	Long Term Investments LongTermInvestments	4809000	usd
CY2022Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	11548000	usd
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	11421000	usd
CY2022Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	18958000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20361000	usd
CY2022Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	13898000	usd
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	367000	usd
CY2022Q2	us-gaap	Assets Assets	191476000	usd
CY2022Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	12822000	usd
CY2021Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	12827000	usd
CY2022Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	365000	usd
CY2021Q4	us-gaap	Assets Assets	213690000	usd
CY2022Q2	us-gaap	Accounts Payable Current AccountsPayableCurrent	2716000	usd
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	909000	usd
CY2022Q2	erii	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	9483000	usd
CY2021Q4	erii	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	13994000	usd
CY2022Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1505000	usd
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1564000	usd
CY2022Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1507000	usd
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	3318000	usd
CY2022Q2	us-gaap	Liabilities Current LiabilitiesCurrent	15211000	usd
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	19785000	usd
CY2022Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	14177000	usd
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	14879000	usd
CY2022Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	227000	usd
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	247000	usd
CY2022Q2	us-gaap	Liabilities Liabilities	29615000	usd
CY2021Q4	us-gaap	Liabilities Liabilities	34911000	usd
CY2022Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q2	us-gaap	Common Stock Value CommonStockValue	64000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	64000	usd
CY2022Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	200129000	usd
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	195593000	usd
CY2022Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-515000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-149000	usd
CY2022Q2	us-gaap	Treasury Stock Value TreasuryStockValue	80455000	usd
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	53832000	usd
CY2022Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	42638000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	37103000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	161861000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	178779000	usd
CY2022Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	191476000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	213690000	usd
CY2022Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	20292000	usd
CY2021Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	20607000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	52838000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	49547000	usd
CY2022Q2	us-gaap	Cost Of Revenue CostOfRevenue	6920000	usd
CY2021Q2	us-gaap	Cost Of Revenue CostOfRevenue	7181000	usd
	us-gaap	Cost Of Revenue CostOfRevenue	16418000	usd
	us-gaap	Cost Of Revenue CostOfRevenue	16162000	usd
CY2022Q2	us-gaap	Gross Profit GrossProfit	13372000	usd
CY2021Q2	us-gaap	Gross Profit GrossProfit	13426000	usd
	us-gaap	Gross Profit GrossProfit	36420000	usd
	us-gaap	Gross Profit GrossProfit	33385000	usd
CY2022Q2	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	6996000	usd
CY2021Q2	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	6178000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	13547000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12788000	usd
CY2022Q2	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	3849000	usd
CY2021Q2	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	2537000	usd
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	7213000	usd
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	5240000	usd
CY2022Q2	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	5431000	usd
CY2021Q2	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	4424000	usd
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	10342000	usd
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	8926000	usd
CY2022Q2	us-gaap	Operating Expenses OperatingExpenses	16276000	usd
CY2021Q2	us-gaap	Operating Expenses OperatingExpenses	13139000	usd
	us-gaap	Operating Expenses OperatingExpenses	31102000	usd
	us-gaap	Operating Expenses OperatingExpenses	26954000	usd
CY2022Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-2904000	usd
CY2021Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	287000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	5318000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	6431000	usd
CY2022Q2	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	166000	usd
CY2021Q2	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	51000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	227000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	143000	usd
CY2022Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-60000	usd
CY2021Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-12000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-4000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-22000	usd
CY2022Q2	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	106000	usd
CY2021Q2	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	39000	usd
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	223000	usd
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	121000	usd
CY2022Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-2798000	usd
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	326000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5541000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6552000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-439000	usd
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-743000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1383000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	-2359000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	1069000	usd
	us-gaap	Net Income Loss NetIncomeLoss	5535000	usd
	us-gaap	Net Income Loss NetIncomeLoss	7935000	usd
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.04
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.1
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.04
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.1
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.13
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	56218000	shares
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	57253000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	56499000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	57066000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	56218000	shares
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	58999000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	57858000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	58822000	shares
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	-2359000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	1069000	usd
	us-gaap	Net Income Loss NetIncomeLoss	5535000	usd
	us-gaap	Net Income Loss NetIncomeLoss	7935000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	15000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	5000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	4000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-20000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-112000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-38000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-370000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-86000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-97000	usd
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-33000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-366000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-106000	usd
CY2022Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-2456000	usd
CY2021Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1036000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5169000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	7829000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	161861000	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	179826000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	161861000	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	179826000	usd
CY2022Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	55788519	shares
CY2021Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	57154420	shares
CY2022Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	55788519	shares
CY2021Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	57154420	shares
	us-gaap	Net Income Loss NetIncomeLoss	5535000	usd
	us-gaap	Net Income Loss NetIncomeLoss	7935000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	3604000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	3341000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3649000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2733000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-507000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-139000	usd
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-127000	usd
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-1441000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	91000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-149000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-6704000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-4193000	usd
	erii	Increase Decrease In Costs In Excess Of Billings On Uncompleted Contracts Or Programs1 IncreaseDecreaseInCostsInExcessOfBillingsOnUncompletedContractsOrPrograms1	194000	usd
	erii	Increase Decrease In Costs In Excess Of Billings On Uncompleted Contracts Or Programs1 IncreaseDecreaseInCostsInExcessOfBillingsOnUncompletedContractsOrPrograms1	1356000	usd
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	7905000	usd
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	3621000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	331000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	47000	usd
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3063000	usd
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1237000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-5477000	usd
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-3999000	usd
	erii	Increase Decrease In Contract Liabilities IncreaseDecreaseInContractLiabilities	-1846000	usd
	erii	Increase Decrease In Contract Liabilities IncreaseDecreaseInContractLiabilities	-434000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	7479000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	11541000	usd
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	25421000	usd
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	14861000	usd
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	35964000	usd
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	12034000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2436000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2444000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-12979000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	383000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	985000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8697000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	26623000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	11554000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-25638000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2857000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-20000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-31134000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	9047000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	74461000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	94358000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	43327000	usd
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	103405000	usd
	us-gaap	Nature Of Operations NatureOfOperations	Description of Business and Significant Accounting Policies<span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Energy Recovery, Inc. and its wholly-owned subsidiaries (the “Company” or “Energy Recovery”) designs and manufactures solutions that make industrial processes more efficient and sustainable. Leveraging the Company’s pressure exchanger technology, which generates little to no emissions when operating, the Company’s solutions lower costs, save energy, reduce waste and minimize emissions for companies across a variety of industrial processes. As the world coalesces around the urgent need to address climate change and its impacts, the Company is helping companies reduce their energy consumption in their industrial processes, which in turn, reduces their carbon footprint. The Company believes that its customers do not have to sacrifice quality and cost savings for sustainability and is committed to developing solutions that drive long-term value – both financial and environmental. The Company’s solutions are marketed, sold in, or developed for, the fluid-flow and gas markets, such as seawater and industrial wastewater desalination, natural gas, chemical processing and refrigeration systems, under the trademarks ERI</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">®</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, Ultra PX</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">™</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, PX</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">®</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, Pressure Exchanger</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">®</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, PX Pressure Exchanger</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">® </span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(“PX”), PX G1300</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">™</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, PX G</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">™</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, PX PowerTrain</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">™</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, IsoBoost</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">®</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, AT</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">™</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, and AquaBold</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline">™</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">. The Company owns, manufactures and/or develops its solutions, in whole or in part, in the United States of America (the “U.S.”).</span><div style="text-align:justify"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Basis of Presentation</span></div><div style="text-align:justify;text-indent:27pt"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Condensed Consolidated Financial Statements include the accounts of Energy Recovery, Inc. and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.</span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The accompanying Condensed Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in the financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. The December 31, 2021 Condensed Consolidated Balance Sheet was derived from audited financial statements and may not include all disclosures required by GAAP; however, the Company believes that the disclosures are adequate to make the information presented not misleading. </span></div><div style="text-align:justify;text-indent:27pt"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The June 30, 2022 unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the notes thereto for the fiscal year ended December 31, 2021 included in the Company’s Annual Report on Form 10-K filed with the SEC on February 24, 2022 (the “2021 Annual Report”).</span></div><div style="text-align:justify;text-indent:27pt"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">All adjustments consisting of normal recurring adjustments that are necessary to present fairly the financial position, results of operations and cash flows for the interim periods have been made. The results of operations for the interim periods are not necessarily indicative of the operating results for the full fiscal year or any future periods.</span></div><div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassifications</span></div><div style="text-align:justify;text-indent:27pt"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain prior period amounts have been reclassified in the Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Cash Flows and certain notes to the Condensed Consolidated Financial Statements to conform to the current period presentation.</span></div><div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of Condensed Consolidated Financial Statements, in conformity with GAAP, requires the Company’s management to make judgments, assumptions and estimates that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes.</span></div><div style="text-align:justify;text-indent:27pt"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The accounting policies that reflect the Company’s more significant estimates and judgments and that the Company believes are the most critical to aid in fully understanding and evaluating its reported financial results are revenue recognition; valuation of stock options; useful life and valuation of equipment; valuation and impairment of goodwill; inventory; deferred taxes and valuation allowances on deferred tax assets; and evaluation and measurement of contingencies. Those estimates could change, and as a result, actual results could differ materially from those estimates.</span></div>Although there has been uncertainty and disruption in the global economy, supply chain and financial markets, the Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of August 3, 2022, the date of issuance of this Quarterly Report on Form 10-Q. These estimates may change, as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions. The Company undertakes no obligation to update publicly these estimates for any reason after the date of this Quarterly Report on Form 10-Q, except as required by law.Significant Accounting PoliciesThere have been no material changes to the Company’s significant accounting policies in Note 1, “Description of Business and Significant Accounting Policies,” of the Notes to Consolidated Financial Statements included in Item 8, “Financial Statements and Supplementary Data,” in the 2021 Annual Report.<div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2020-04, </span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Reference Rate Reform (Topic 848) </span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(“ASU 2020-04”), which provided optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by the discontinuation of the London Interbank Offered Rate (“LIBOR”) or by another reference rate expected to be discontinued. The FASB later issued ASU No. 2021-01, </span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Reference Rate Reform (Topic 848): Scope, to clarify the scope of Topic 848 so that derivatives affected by the discounting transition are explicitly eligible for certain optional expedients and exceptions in Topic 848</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> (“ASU 2021-01”). Entities may apply the provisions of the new standards as of the beginning of the reporting period when the election is made (i.e., as early as the first quarter of 2020). Unlike other topics, the provisions of this update are only available until December 31, 2022, when the reference rate replacement activity is expected to have been completed. An entity may elect to apply amendments prospectively through December 31, 2022. </span></div><div style="text-align:justify;text-indent:27pt"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On July 15, 2022, the Company amended its existing credit agreement (as defined in Note 6, “Lines of Credit”) to change the reference rate for borrowings from LIBOR to the Secured Overnight Financing Rate (“SOFR”). The Company applied ASU 2020-04 and the optional expedients at the time of this modification. The Company’s adoption of ASU 2020-04 and ASU 2021-01 on July 15, 2022, did not have a material impact on the Company’s financial condition, results of operations, and cash flows. Refer to Note 6, “Lines of Credit,” for more information.</span></div>
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassifications</span></div><div style="text-align:justify;text-indent:27pt"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain prior period amounts have been reclassified in the Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Cash Flows and certain notes to the Condensed Consolidated Financial Statements to conform to the current period presentation.</span></div>
	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of Condensed Consolidated Financial Statements, in conformity with GAAP, requires the Company’s management to make judgments, assumptions and estimates that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes.</span></div><div style="text-align:justify;text-indent:27pt"><span><br/></span></div><div style="text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The accounting policies that reflect the Company’s more significant estimates and judgments and that the Company believes are the most critical to aid in fully understanding and evaluating its reported financial results are revenue recognition; valuation of stock options; useful life and valuation of equipment; valuation and impairment of goodwill; inventory; deferred taxes and valuation allowances on deferred tax assets; and evaluation and measurement of contingencies. Those estimates could change, and as a result, actual results could differ materially from those estimates.</span></div>Although there has been uncertainty and disruption in the global economy, supply chain and financial markets, the Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of August 3, 2022, the date of issuance of this Quarterly Report on Form 10-Q. These estimates may change, as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions. The Company undertakes no obligation to update publicly these estimates for any reason after the date of this Quarterly Report on Form 10-Q, except as required by law.
CY2022Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	20292000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	52838000	usd
CY2022Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	20292000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	52838000	usd
CY2021Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	20607000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	49547000	usd
CY2021Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	20607000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	49547000	usd
CY2022Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	13926000	usd
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	20615000	usd
CY2022Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	299000	usd
CY2021Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	493000	usd
CY2022Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1507000	usd
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	3318000	usd
CY2022Q2	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	53000	usd
CY2021Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	88000	usd
CY2022Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1560000	usd
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3406000	usd
CY2022Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1472000	usd
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3406000	usd
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1640000	usd
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	2898000	usd
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1415000	usd
	erii	Contract With Customer Liability Increase Decrease From Cash Receipts ContractWithCustomerLiabilityIncreaseDecreaseFromCashReceipts	1052000	usd
CY2021	erii	Contract With Customer Liability Increase Decrease From Cash Receipts ContractWithCustomerLiabilityIncreaseDecreaseFromCashReceipts	3181000	usd
CY2022Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1560000	usd
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3406000	usd
CY2022Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	5497000	usd
CY2022Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	12860000	usd
CY2022Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	19829000	usd
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CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	1069000	usd
	us-gaap	Net Income Loss NetIncomeLoss	5535000	usd
	us-gaap	Net Income Loss NetIncomeLoss	7935000	usd
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	56218000	shares
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	57253000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	56499000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	57066000	shares
CY2022Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2021Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1746000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1359000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1756000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	56218000	shares
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	58999000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	57858000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	58822000	shares
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.04
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.1
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.04
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.1
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.13
CY2022Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3140000	shares
CY2021Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	357000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	457000	shares
CY2022Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	43223000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	74358000	usd
CY2021Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	103302000	usd
CY2022Q2	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	104000	usd
CY2021Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	103000	usd
CY2021Q2	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	103000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	43327000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	74461000	usd
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	103405000	usd
CY2022Q2	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	14026000	usd
CY2021Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	20732000	usd
CY2022Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	100000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	117000	usd
CY2022Q2	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	13926000	usd
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	20615000	usd
CY2022Q2	us-gaap	Inventory Raw Materials InventoryRawMaterials	11110000	usd
CY2021Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	7352000	usd
CY2022Q2	us-gaap	Inventory Work In Process InventoryWorkInProcess	3809000	usd
CY2021Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	3406000	usd
CY2022Q2	us-gaap	Inventory Finished Goods InventoryFinishedGoods	13994000	usd
CY2021Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	10274000	usd
CY2022Q2	us-gaap	Inventory Gross InventoryGross	28913000	usd
CY2021Q4	us-gaap	Inventory Gross InventoryGross	21032000	usd
CY2022Q2	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	678000	usd
CY2021Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	649000	usd
CY2022Q2	us-gaap	Inventory Net InventoryNet	28235000	usd
CY2021Q4	us-gaap	Inventory Net InventoryNet	20383000	usd
CY2022Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	299000	usd
CY2021Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	493000	usd
CY2021Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	12827000	usd
CY2022Q2	erii	Cloud Computing Arrangements Current CloudComputingArrangementsCurrent	964000	usd
CY2021Q4	erii	Cloud Computing Arrangements Current CloudComputingArrangementsCurrent	1041000	usd
CY2022Q2	erii	Supplier Advances Current SupplierAdvancesCurrent	1914000	usd
CY2021Q4	erii	Supplier Advances Current SupplierAdvancesCurrent	1717000	usd
CY2022Q2	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	2036000	usd
CY2021Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	1824000	usd
CY2022Q2	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	5213000	usd
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	5075000	usd
CY2022Q2	us-gaap	Depreciation Depreciation	900000	usd
CY2022Q2	us-gaap	Goodwill Goodwill	12790000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	12790000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	32000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	37000	usd
CY2022Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	12822000	usd
CY2022Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	6375000	usd
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	10170000	usd
CY2022Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	897000	usd
CY2021Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	879000	usd
CY2022Q2	erii	Other Accrued Expenses And Current Liabilities OtherAccruedExpensesAndCurrentLiabilities	2211000	usd
CY2021Q4	erii	Other Accrued Expenses And Current Liabilities OtherAccruedExpensesAndCurrentLiabilities	2945000	usd
CY2022Q2	erii	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	9483000	usd
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CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	247000	usd
CY2022Q2	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	9710000	usd
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CY2022Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	69470000	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0	usd
CY2022Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	519000	usd
CY2022Q2	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	68951000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	84543000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	0	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	48000	usd
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CY2021Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	879000	usd
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CY2022Q2	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	77000	usd
CY2021Q2	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	81000	usd
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	202000	usd
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	208000	usd
CY2022Q2	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	19000	usd
CY2021Q2	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	13000	usd
	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	24000	usd
	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	13000	usd
CY2022Q2	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	-75000	usd
CY2021Q2	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	-70000	usd
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CY2022Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	897000	usd
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CY2022Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	897000	usd
CY2021Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	809000	usd
CY2018Q4	erii	Litigation Settlement Period To Reinitiate A Case LitigationSettlementPeriodToReinitiateACase	P1Y
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-439000	usd
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-743000	usd
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CY2022Q2	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	204000	usd
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CY2022Q2	erii	Income Tax Expense Benefit Excluding Discrete Items IncomeTaxExpenseBenefitExcludingDiscreteItems	-235000	usd
CY2021Q2	erii	Income Tax Expense Benefit Excluding Discrete Items IncomeTaxExpenseBenefitExcludingDiscreteItems	-15000	usd
	erii	Income Tax Expense Benefit Excluding Discrete Items IncomeTaxExpenseBenefitExcludingDiscreteItems	809000	usd
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CY2022Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.157
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CY2022Q2	erii	Effective Income Tax Rate Reconciliation Excluding Discrete Tax Income Tax Items Percent EffectiveIncomeTaxRateReconciliationExcludingDiscreteTaxIncomeTaxItemsPercent	0.084
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CY2022Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-2904000	usd
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	us-gaap	Operating Income Loss OperatingIncomeLoss	6431000	usd
CY2022Q2	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	8146859	shares
CY2022Q2	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	80500000	usd

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$ERII
Energy Recovery, Inc. Stock $erii

2022 Q3 Form 10-Q Financial Statement

#000142151722000122 Filed on August 03, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ERII Energy Recovery, Inc. Stock $erii

2022 Q3 Form 10-Q Financial Statement

#000142151722000122 Filed on August 03, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ERII
Energy Recovery, Inc. Stock $erii