$HYMC
HYCROFT MINING HOLDING CORP Stock $hymc

$hymc Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000171840521000029 Filed on March 24, 2021

Income Statement

Concept	2020 Q4	2019 Q4	2019
Revenue	$15.99M	$13.71M	$13.71M
YoY Change	16.63%
Cost Of Revenue	$28.12M	$14.23M	$30.67M
YoY Change	97.61%
Gross Profit	-$12.13M	-$520.0K	-$16.96M
YoY Change	2232.69%
Gross Profit Margin	-75.86%	-3.79%	-123.71%
Selling, General & Admin	$2.940M	$9.150M	$9.600M
YoY Change	-67.87%	4475.0%	1473.77%
% of Gross Profit
Research & Development		$7.710M	$7.710M
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.620M	$2.080M	$2.078M
YoY Change	-22.12%
% of Gross Profit
Operating Expenses	$3.030M	$16.46M	$16.98M
YoY Change	-81.59%	8130.0%	2683.77%
Operating Profit	-$15.16M	-$16.98M	-$33.94M
YoY Change	-10.72%		5467.92%
Interest Expense	-$7.710M	-$67.53M	-$64.05M
YoY Change	-88.58%	-6593.27%	-2355.28%
% of Operating Profit
Other Income/Expense, Net	$0.00
YoY Change
Pretax Income	-$22.87M	-$101.9M	-$98.90M
YoY Change	-77.56%	-12379.52%	-4524.02%
Income Tax	$0.00	-$720.0K	$0.00
% Of Pretax Income
Net Earnings	-$22.87M	-$101.2M	-$98.90M
YoY Change	-77.4%	-16163.49%	-5986.74%
Net Earnings / Revenue	-143.03%	-738.15%	-721.39%
Basic Earnings Per Share			-$328.00
Diluted Earnings Per Share	-$326.0K	-$337.3M	-$328.00
COMMON SHARES
Basic Shares Outstanding	59.74M shares		301.6K shares
Diluted Shares Outstanding			301.6K shares

Balance Sheet

Concept	2020 Q4	2019 Q4	2019
SHORT-TERM ASSETS
Cash & Short-Term Investments	$56.40M	$6.200M	$6.200M
YoY Change	809.68%	1140.0%	1140.0%
Cash & Equivalents	$96.04M	$48.97M	$200.0K
Short-Term Investments
Other Short-Term Assets	$42.30M	$27.90M	$28.00M
YoY Change	51.61%	27800.0%	27900.0%
Inventory	$12.87M	$4.453M	$4.500M
Prepaid Expenses	$3.198M	$2.109M
Receivables	$426.0K	$97.00K	$100.0K
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$112.0M	$38.75M	$38.80M
YoY Change	189.03%	6487.44%	6366.67%
LONG-TERM ASSETS
Property, Plant & Equipment	$60.22M	$31.52M	$31.50M
YoY Change	91.04%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments		$215.4M	$215.4M
YoY Change		1.17%	1.17%
Other Assets	$13.48M	$24.89M	$64.40M
YoY Change	-45.82%
Total Long-Term Assets	$120.6M	$95.89M	$95.80M
YoY Change	25.8%	-54.97%	-55.0%
TOTAL ASSETS
Total Short-Term Assets	$112.0M	$38.75M	$38.80M
Total Long-Term Assets	$120.6M	$95.89M	$95.80M
Total Assets	$232.6M	$134.6M	$134.6M
YoY Change	72.78%	-36.94%	-36.96%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$12.28M	$10.75M	$10.70M
YoY Change	14.28%	5273.0%	5250.0%
Accrued Expenses	$4.200M	$800.0K	$4.800M
YoY Change	425.0%
Deferred Revenue	$0.00
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$5.120M	$554.0M	$554.0M
YoY Change	-99.08%
Total Short-Term Liabilities	$21.68M	$569.5M	$569.5M
YoY Change	-96.19%	75146.45%	71087.5%
LONG-TERM LIABILITIES
Long-Term Debt	$142.7M	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$1.650M	$18.00K	$4.400M
YoY Change	9066.67%	-99.75%	-39.73%
Total Long-Term Liabilities	$144.3M	$18.00K	$4.400M
YoY Change	801650.0%	-99.75%	-39.73%
TOTAL LIABILITIES
Total Short-Term Liabilities	$21.68M	$569.5M	$569.5M
Total Long-Term Liabilities	$144.3M	$18.00K	$4.400M
Total Liabilities	$216.0M	$573.9M	$573.9M
YoY Change	-62.36%	7040.72%	7073.75%
SHAREHOLDERS EQUITY
Retained Earnings	-$520.8M	-$444.4M
YoY Change	17.17%	-26599.14%
Common Stock	$6.000K	$0.00
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$16.62M	-$439.3M	-$439.3M
YoY Change
Total Liabilities & Shareholders Equity	$232.6M	$134.6M	$134.6M
YoY Change	72.78%	-36.94%	-36.96%

Cashflow Statement

Concept	2020 Q4	2019 Q4	2019
OPERATING ACTIVITIES
Net Income	-$22.87M	-$101.2M	-$98.90M
YoY Change	-77.4%	-16163.49%	-5986.74%
Depreciation, Depletion And Amortization	$1.620M	$2.080M	$2.078M
YoY Change	-22.12%
Cash From Operating Activities	-$25.30M	-$57.85M	-$59.77M
YoY Change	-56.27%	41221.43%	13102.79%
INVESTING ACTIVITIES
Capital Expenditures	-$14.20M	-$12.30M	$12.30M
YoY Change	15.45%
Acquisitions
YoY Change
Other Investing Activities	$2.320M	$260.0K	$0.00
YoY Change	792.31%		-100.0%
Cash From Investing Activities	-$11.88M	-$13.95M	-$12.30M
YoY Change	-14.84%		-94.15%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	82.07M	68.17M	$68.17M
YoY Change	20.39%		-67.7%
NET CHANGE
Cash From Operating Activities	-25.30M	-57.85M	-$59.77M
Cash From Investing Activities	-11.88M	-13.95M	-$12.30M
Cash From Financing Activities	82.07M	68.17M	$68.17M
Net Change In Cash	44.89M	-3.630M	-$3.894M
YoY Change	-1336.64%	2492.86%	-862.03%
FREE CASH FLOW
Cash From Operating Activities	-$25.30M	-$57.85M	-$59.77M
Capital Expenditures	-$14.20M	-$12.30M	$12.30M
Free Cash Flow	-$11.10M	-$45.55M	-$72.07M
YoY Change	-75.63%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Local Phone Number LocalPhoneNumber	253-3267
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001718405
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-38387
CY2020	dei	Entity Registrant Name EntityRegistrantName	HYCROFT MINING HOLDING CORP
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	8181 E. Tufts Avenue, Suite 510
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Denver
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CO
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	82-2657796
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	80237
CY2020	dei	City Area Code CityAreaCode	303
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	true
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
CY2020	dei	Entity Ex Transition Period EntityExTransitionPeriod	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	false
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	86679426	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	59901306	shares
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	59901306	shares
CY2020Q4	us-gaap	Cash Cash	56363000	USD
CY2019Q4	us-gaap	Cash Cash	6220000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	426000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	97000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	12867000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	4453000	USD
CY2020Q4	hymc	Inventory Ore On Leach Pads Current InventoryOreOnLeachPadsCurrent	38041000	USD
CY2019Q4	hymc	Inventory Ore On Leach Pads Current InventoryOreOnLeachPadsCurrent	22062000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	4303000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	2648000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	0	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	3270000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	112000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	38750000	USD
CY2020Q4	hymc	Inventory Ore On Leach Pads Noncurrent InventoryOreOnLeachPadsNoncurrent	7243000	USD
CY2019Q4	hymc	Inventory Ore On Leach Pads Noncurrent InventoryOreOnLeachPadsNoncurrent	0	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13483000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	24886000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60223000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	31524000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	39677000	USD
CY2019Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	39477000	USD
CY2020Q4	us-gaap	Assets Assets	232626000	USD
CY2019Q4	us-gaap	Assets Assets	134637000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	12280000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	10746000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	4157000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	3939000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	5120000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	553965000	USD
CY2020Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	124000	USD
CY2019Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	0	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	0	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	846000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	21681000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	569496000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1712000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	18000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	142665000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	0	USD
CY2020Q4	hymc	Royalty Obligation Noncurrent RoyaltyObligationNoncurrent	29839000	USD
CY2019Q4	hymc	Royalty Obligation Noncurrent RoyaltyObligationNoncurrent	0	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	4785000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	4374000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	200682000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	573888000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34833211	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	59901306	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	59901306	shares
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CY2020Q4	us-gaap	Common Stock Value CommonStockValue	6000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	0	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	548975000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5187000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-517037000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-444438000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	31944000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	-439251000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	232626000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	134637000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	47044000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13709000	USD
CY2020	us-gaap	Manufacturing Costs ManufacturingCosts	41688000	USD
CY2019	us-gaap	Manufacturing Costs ManufacturingCosts	11041000	USD
CY2020	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	2894000	USD
CY2019	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	1011000	USD
CY2020	hymc	Mine Site Period Costs MineSitePeriodCosts	47115000	USD
CY2019	hymc	Mine Site Period Costs MineSitePeriodCosts	2174000	USD
CY2020	hymc	Inventory Ore On Leach Pads Write Down InventoryOreOnLeachPadsWriteDown	17924000	USD
CY2019	hymc	Inventory Ore On Leach Pads Write Down InventoryOreOnLeachPadsWriteDown	16443000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	109621000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	30669000	USD
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	21084000	USD
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CY2019	us-gaap	Accretion Expense AccretionExpense	422000	USD
CY2020	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	0	USD
CY2019	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	7708000	USD
CY2020	hymc	Pre Production Depreciation And Amortization PreProductionDepreciationAndAmortization	0	USD
CY2019	hymc	Pre Production Depreciation And Amortization PreProductionDepreciationAndAmortization	1067000	USD
CY2020	hymc	Care And Maintenance CareAndMaintenance	0	USD
CY2019	hymc	Care And Maintenance CareAndMaintenance	3529000	USD
CY2020	hymc	Asset Retirement Obligation Period Decrease Other AssetRetirementObligationPeriodDecreaseOther	0	USD
CY2019	hymc	Asset Retirement Obligation Period Decrease Other AssetRetirementObligationPeriodDecreaseOther	1880000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-89366000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-33941000	USD
CY2020	us-gaap	Interest Expense Debt InterestExpenseDebt	43458000	USD
CY2019	us-gaap	Interest Expense Debt InterestExpenseDebt	64846000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	45000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	0	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	199000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	797000	USD
CY2020	hymc	Income Loss From Continuing Operations Before Reorganization Items And Net Income Taxes Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeReorganizationItemsAndNetIncomeTaxesNoncontrollingInterest	-132670000	USD
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CY2020	us-gaap	Reorganization Items ReorganizationItems	0	USD
CY2019	us-gaap	Reorganization Items ReorganizationItems	905000	USD
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CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-98895000	USD
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CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
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CY2019	us-gaap	Net Income Loss NetIncomeLoss	-98895000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.81
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CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34833211	shares
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CY2020	us-gaap	Net Income Loss NetIncomeLoss	-132670000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-98895000	USD
CY2020	hymc	Non Cash Portion Of Interest Expense NonCashPortionOfInterestExpense	38843000	USD
CY2019	hymc	Non Cash Portion Of Interest Expense NonCashPortionOfInterestExpense	54810000	USD
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CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5886000	USD
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CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	2380000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	1102000	USD
CY2020	us-gaap	Other Postretirement Benefits Expense Reversal Of Expense Noncash OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash	2116000	USD
CY2019	us-gaap	Other Postretirement Benefits Expense Reversal Of Expense Noncash OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash	0	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	45000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	0	USD
CY2020	us-gaap	Accretion Expense AccretionExpense	374000	USD
CY2019	us-gaap	Accretion Expense AccretionExpense	422000	USD
CY2020	hymc	Phantom Share Compensation PhantomShareCompensation	225000	USD
CY2019	hymc	Phantom Share Compensation PhantomShareCompensation	706000	USD
CY2020	hymc	Royalty Obligation Amortization RoyaltyObligationAmortization	37000	USD
CY2019	hymc	Royalty Obligation Amortization RoyaltyObligationAmortization	0	USD
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CY2019	hymc	Asset Retirement Obligation Period Decrease Other AssetRetirementObligationPeriodDecreaseOther	1880000	USD
CY2020	hymc	Fair Value Adjustment Of Phantom Shares FairValueAdjustmentOfPhantomShares	0	USD
CY2019	hymc	Fair Value Adjustment Of Phantom Shares FairValueAdjustmentOfPhantomShares	181000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	329000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	97000	USD
CY2020	us-gaap	Increase Decrease In Finished Goods And Work In Process Inventories IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories	43756000	USD
CY2019	us-gaap	Increase Decrease In Finished Goods And Work In Process Inventories IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories	38627000	USD
CY2020	us-gaap	Increase Decrease In Raw Materials Packaging Materials And Supplies Inventories IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories	3891000	USD
CY2019	us-gaap	Increase Decrease In Raw Materials Packaging Materials And Supplies Inventories IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories	977000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2946000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	507000	USD
CY2020	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	75963000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	372000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3384000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	443000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	52000	USD
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-818000	USD
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-203000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-110508000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-59771000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	33439000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12296000	USD
CY2020	us-gaap	Proceeds From Sale Of Machinery And Equipment ProceedsFromSaleOfMachineryAndEquipment	2315000	USD
CY2019	us-gaap	Proceeds From Sale Of Machinery And Equipment ProceedsFromSaleOfMachineryAndEquipment	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31124000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-12296000	USD
CY2020	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	83515000	USD
CY2019	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	0	USD
CY2020	hymc	Proceeds From Royalty Obligation ProceedsFromRoyaltyObligation	30000000	USD
CY2019	hymc	Proceeds From Royalty Obligation ProceedsFromRoyaltyObligation	0	USD
CY2020	hymc	Proceeds From Recapitalization Transaction ProceedsFromRecapitalizationTransaction	10419000	USD
CY2019	hymc	Proceeds From Recapitalization Transaction ProceedsFromRecapitalizationTransaction	0	USD
CY2020	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	1000	USD
CY2019	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	0	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	16094000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3658000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	188705000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	68173000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	47073000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-3894000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	48967000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	52861000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	96040000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	48967000	USD
CY2020Q4	us-gaap	Cash Cash	56363000	USD
CY2019Q4	us-gaap	Cash Cash	6220000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	0	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	3270000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	39677000	USD
CY2019Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	39477000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	96040000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	48967000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	-340356000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-98895000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	-439251000	USD
CY2020	hymc	Unredeemed Spac Shares Of Muds Public Stockholders Value UnredeemedSPACSharesOfMUDSPublicStockholdersValue	3723000	USD
CY2020	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	444000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	1802000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	8255000	USD
CY2020Q2	hymc	Cash In Reserve For Dissolution CashInReserveForDissolution	2300000	USD
CY2020Q2	hymc	Payments For Underwriter Fees PaymentsForUnderwriterFees	2500000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	388000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-132670000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	31944000	USD
CY2020Q4	hymc	Unissued Shares UnissuedShares	21256	shares
CY2020Q2	hymc	Reverse Recapitalization Conversion Ratio ReverseRecapitalizationConversionRatio	0.112
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-132700000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-110500000	USD
CY2020Q4	us-gaap	Cash Cash	56400000	USD
CY2020Q4	hymc	Working Capital WorkingCapital	90300000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	200700000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-517000000.0	USD
CY2020Q4	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	83100000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Rolling Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths	9100000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:10pt;text-align:justify"><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;text-decoration:underline">Use of estimates</span></div><div style="margin-top:10pt;text-align:justify;text-indent:18pt"><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> Company’s financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in these financial statements and accompanying notes. The more significant areas requiring the use of management estimates and assumptions relate to: recoverable gold and silver on the leach pads and in-process inventories; timing of near-term ounce production and related sales; the useful lives of long-lived assets; probabilities of future expansion projects; estimates of mineral reserves; estimates of life-of-mine production timing, volumes, costs and prices; current and future mining and processing plans; environmental reclamation and closure costs and timing; deferred taxes and related valuation allowances; and estimates of fair value for asset impairments and financial instruments. The Company bases its estimates on historical experience and various other assumptions that are believed to be reasonable at the time the estimate is made. Actual results may differ from amounts estimated in these financial statements, and such differences could be material. Accordingly, amounts presented in these financial statements are not indicative of results that may be expected for future periods.</span></div>
CY2019Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	0	USD
CY2020Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	0	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	39700000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	42700000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	40000.00	USD
CY2019Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	0	USD
CY2020	hymc	Royalty Obligation Proposed Mine Plan Term RoyaltyObligationProposedMinePlanTerm	P34Y
CY2020Q2	hymc	Proceeds From Recapitalization Transaction ProceedsFromRecapitalizationTransaction	10400000	USD
CY2020Q2	hymc	Shares Surrendered Shares SharesSurrenderedShares	3500000	shares
CY2020Q2	hymc	Stock Issued During Period Percent Issued To Creditors StockIssuedDuringPeriodPercentIssuedToCreditors	0.010
CY2020Q2	hymc	Proceeds From Royalty Obligation ProceedsFromRoyaltyObligation	30000000.0	USD
CY2020Q2	hymc	Royalty Obligation Smelter Net Percent RoyaltyObligationSmelterNetPercent	0.015
CY2020Q2	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	40000.00	shares
CY2020Q2	hymc	Payments For Additional Underwriter Fees PaymentsForAdditionalUnderwriterFees	2000000.0	USD
CY2020Q2	hymc	Common Stock And Warrants Cash Remitted To Holders Of Sellers Deferred Phantom Units CommonStockAndWarrantsCashRemittedToHoldersOfSellersDeferredPhantomUnits	1800000	USD
CY2020Q2	hymc	Common Stock And Warrants Cash Paid For Additional Transaction Costs CommonStockAndWarrantsCashPaidForAdditionalTransactionCosts	7400000	USD
CY2020Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	50160042	shares
CY2020Q2	hymc	Common Stock Outstanding Percentage CommonStockOutstandingPercentage	1.000
CY2020Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	6449000	USD
CY2020Q4	hymc	Inventory Materials And Supplies Gold Ounces InventoryMaterialsAndSuppliesGoldOunces	0	oz
CY2019Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	2559000	USD
CY2019Q4	hymc	Inventory Materials And Supplies Gold Ounces InventoryMaterialsAndSuppliesGoldOunces	0	oz
CY2020Q4	hymc	Inventory Merrill Crowe In Process Gross InventoryMerrillCroweInProcessGross	4810000	USD
CY2020Q4	hymc	Inventory Merrill Crowe In Process Gold Ounces InventoryMerrillCroweInProcessGoldOunces	2587	oz
CY2019Q4	hymc	Inventory Merrill Crowe In Process Gross InventoryMerrillCroweInProcessGross	1004000	USD
CY2019Q4	hymc	Inventory Merrill Crowe In Process Gold Ounces InventoryMerrillCroweInProcessGoldOunces	691	oz
CY2020Q4	hymc	Inventory Carbon Column In Process Gross InventoryCarbonColumnInProcessGross	299000	USD
CY2020Q4	hymc	Inventory Carbon Column In Process Gold Ounces InventoryCarbonColumnInProcessGoldOunces	166	oz
CY2019Q4	hymc	Inventory Carbon Column In Process Gross InventoryCarbonColumnInProcessGross	478000	USD
CY2019Q4	hymc	Inventory Carbon Column In Process Gold Ounces InventoryCarbonColumnInProcessGoldOunces	474	oz
CY2020Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1309000	USD
CY2020Q4	hymc	Inventory Dor Finished Goods Gold Ounces InventoryDorFinishedGoodsGoldOunces	710	oz
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	412000	USD
CY2019Q4	hymc	Inventory Dor Finished Goods Gold Ounces InventoryDorFinishedGoodsGoldOunces	278	oz
CY2020Q4	us-gaap	Inventory Net InventoryNet	12867000	USD
CY2020Q4	hymc	Inventory Gold Ounces InventoryGoldOunces	3463	oz
CY2019Q4	us-gaap	Inventory Net InventoryNet	4453000	USD
CY2019Q4	hymc	Inventory Gold Ounces InventoryGoldOunces	1443	oz
CY2019Q4	hymc	Capitalized Costs Inventory Capitalized Depreciation And Amortization Costs CapitalizedCostsInventoryCapitalizedDepreciationAndAmortizationCosts	300000	USD
CY2020Q4	hymc	Capitalized Costs Inventory Capitalized Depreciation And Amortization Costs CapitalizedCostsInventoryCapitalizedDepreciationAndAmortizationCosts	300000	USD
CY2020Q4	hymc	Inventory Ore On Leach Pads Current InventoryOreOnLeachPadsCurrent	38041000	USD
CY2020Q4	hymc	Ore On Leach Pads Gold Ounces Current OreOnLeachPadsGoldOuncesCurrent	21869	oz
CY2019Q4	hymc	Inventory Ore On Leach Pads Current InventoryOreOnLeachPadsCurrent	22062000	USD
CY2019Q4	hymc	Ore On Leach Pads Gold Ounces Current OreOnLeachPadsGoldOuncesCurrent	17019	oz
CY2020Q4	hymc	Inventory Ore On Leach Pads Noncurrent InventoryOreOnLeachPadsNoncurrent	7243000	USD
CY2020Q4	hymc	Ore On Leach Pads Gold Ounces Noncurrent OreOnLeachPadsGoldOuncesNoncurrent	4164	oz
CY2019Q4	hymc	Inventory Ore On Leach Pads Noncurrent InventoryOreOnLeachPadsNoncurrent	0	USD
CY2019Q4	hymc	Ore On Leach Pads Gold Ounces Noncurrent OreOnLeachPadsGoldOuncesNoncurrent	0	oz
CY2020Q4	hymc	Inventory Ore On Leach Pads InventoryOreOnLeachPads	45284000	USD
CY2020Q4	hymc	Ore On Leach Pads Gold Ounces OreOnLeachPadsGoldOunces	26033	oz
CY2019Q4	hymc	Inventory Ore On Leach Pads InventoryOreOnLeachPads	22062000	USD
CY2019Q4	hymc	Ore On Leach Pads Gold Ounces OreOnLeachPadsGoldOunces	17019	oz
CY2020Q4	hymc	Capitalized Costs Ore On Leach Pads Current Net CapitalizedCostsOreOnLeachPadsCurrentNet	1800000	USD
CY2019Q4	hymc	Capitalized Costs Ore On Leach Pads Current Net CapitalizedCostsOreOnLeachPadsCurrentNet	1800000	USD
CY2020Q4	hymc	Capitalized Costs Ore On Leach Pads Noncurrent Net CapitalizedCostsOreOnLeachPadsNoncurrentNet	400000	USD
CY2019Q4	hymc	Capitalized Costs Ore On Leach Pads Noncurrent Net CapitalizedCostsOreOnLeachPadsNoncurrentNet	0	USD
CY2020	hymc	Inventory Ore On Leach Pads Gold Write Off InventoryOreOnLeachPadsGoldWriteOff	10492	oz
CY2020	hymc	Inventory Ore On Leach Pads Production Costs Written Off InventoryOreOnLeachPadsProductionCostsWrittenOff	16700000	USD
CY2020	hymc	Inventory Ore On Leach Pads Capitalized Costs Written Off InventoryOreOnLeachPadsCapitalizedCostsWrittenOff	1300000	USD
CY2019	hymc	Inventory Ore On Leach Pads Gold Write Off InventoryOreOnLeachPadsGoldWriteOff	11680	oz
CY2019	hymc	Inventory Ore On Leach Pads Write Down InventoryOreOnLeachPadsWriteDown	16400000	USD
CY2019	hymc	Inventory Ore On Leach Pads Production Costs Written Off InventoryOreOnLeachPadsProductionCostsWrittenOff	15100000	USD
CY2019	hymc	Inventory Ore On Leach Pads Capitalized Costs Written Off InventoryOreOnLeachPadsCapitalizedCostsWrittenOff	1300000	USD
CY2020	hymc	Mine Site Period Costs Gross MineSitePeriodCostsGross	46700000	USD
CY2020	hymc	Mine Site Period Costs Depreciation And Amortization MineSitePeriodCostsDepreciationAndAmortization	3000000.0	USD
CY2019	hymc	Mine Site Period Costs Gross MineSitePeriodCostsGross	2200000	USD
CY2019	hymc	Mine Site Period Costs Depreciation And Amortization MineSitePeriodCostsDepreciationAndAmortization	200000	USD
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	3198000	USD
CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	2109000	USD
CY2020Q4	us-gaap	Deposits Assets Current DepositsAssetsCurrent	1105000	USD
CY2019Q4	us-gaap	Deposits Assets Current DepositsAssetsCurrent	539000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	4303000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	2648000	USD
CY2020Q4	hymc	Equipment Not In Use EquipmentNotInUse	12238000	USD
CY2019Q4	hymc	Equipment Not In Use EquipmentNotInUse	19683000	USD
CY2020Q4	hymc	Prepaid Supplies Consignment Inventory PrepaidSuppliesConsignmentInventory	885000	USD
CY2019Q4	hymc	Prepaid Supplies Consignment Inventory PrepaidSuppliesConsignmentInventory	0	USD
CY2020Q4	us-gaap	Advance Royalties Noncurrent AdvanceRoyaltiesNoncurrent	360000	USD
CY2019Q4	us-gaap	Advance Royalties Noncurrent AdvanceRoyaltiesNoncurrent	120000	USD
CY2020Q4	us-gaap	Deferred Costs DeferredCosts	0	USD
CY2019Q4	us-gaap	Deferred Costs DeferredCosts	5083000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13483000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	24886000	USD
CY2020Q4	us-gaap	Prepaid Insurance PrepaidInsurance	1800000	USD
CY2020Q4	hymc	Prepaid Mining Claims And Permitting Fees PrepaidMiningClaimsAndPermittingFees	400000	USD
CY2020Q4	hymc	Prepaid Equipment PrepaidEquipment	400000	USD
CY2020Q4	hymc	Prepaid Subscription And License Fees PrepaidSubscriptionAndLicenseFees	300000	USD
CY2019Q4	us-gaap	Prepaid Insurance PrepaidInsurance	1500000	USD
CY2019Q4	hymc	Prepaid Mining Claims And Permitting Fees PrepaidMiningClaimsAndPermittingFees	400000	USD
CY2019Q4	hymc	Prepaid Subscription And License Fees PrepaidSubscriptionAndLicenseFees	100000	USD
CY2020Q4	hymc	Royalty Agreement Payment Percentage Of Net Profit RoyaltyAgreementPaymentPercentageOfNetProfit	0.04
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	31524000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	39677000	USD
CY2019Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	39477000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	0	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	3270000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	39677000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	42747000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	85256000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	48732000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	25033000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	17208000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60223000	USD
CY2020Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	40000.00	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	4157000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	2349000	USD
CY2020Q4	us-gaap	Deferred Compensation Share Based Arrangements Liability Current DeferredCompensationShareBasedArrangementsLiabilityCurrent	0	USD
CY2019Q4	us-gaap	Deferred Compensation Share Based Arrangements Liability Current DeferredCompensationShareBasedArrangementsLiabilityCurrent	1590000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	4157000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	3939000	USD
CY2020Q4	us-gaap	Deferred Compensation Cashbased Arrangements Liability Classified Noncurrent DeferredCompensationCashbasedArrangementsLiabilityClassifiedNoncurrent	1145000	USD
CY2019Q4	us-gaap	Deferred Compensation Cashbased Arrangements Liability Classified Noncurrent DeferredCompensationCashbasedArrangementsLiabilityClassifiedNoncurrent	0	USD
CY2020Q4	hymc	Accrued Payroll Taxes Noncurrent AccruedPayrollTaxesNoncurrent	505000	USD
CY2019Q4	hymc	Accrued Payroll Taxes Noncurrent AccruedPayrollTaxesNoncurrent	0	USD
CY2020Q4	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	62000	USD
CY2019	hymc	Interest Expense Debt Other InterestExpenseDebtOther	0	USD
CY2019Q4	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	18000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1712000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	18000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	154000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	949000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	5120000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	553965000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	4026000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	0	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	142665000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	0	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	5274000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	16698000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	23948000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	23948000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	96771000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	166639000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	14674000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	4180000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	147785000	USD
CY2020Q2	hymc	Stock Issued During Period Percent Issued To Creditors StockIssuedDuringPeriodPercentIssuedToCreditors	0.010
CY2020Q4	us-gaap	Proceeds From Sale Of Machinery And Equipment ProceedsFromSaleOfMachineryAndEquipment	2300000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1972000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2048000	USD
CY2020	hymc	Interest Expense Debt Other InterestExpenseDebtOther	40000	USD
CY2020	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	1831000	USD
CY2019	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	551000	USD
CY2020	us-gaap	Interest Expense Debt InterestExpenseDebt	43458000	USD
CY2019	us-gaap	Interest Expense Debt InterestExpenseDebt	64846000	USD
CY2020Q2	hymc	Proceeds From Royalty Obligation ProceedsFromRoyaltyObligation	30000000.0	USD
CY2020Q2	hymc	Royalty Obligation Smelter Net Percent RoyaltyObligationSmelterNetPercent	0.015
CY2020Q2	hymc	Royalty Obligation Smelter Percentage Of Royalty With Right To Purchase RoyaltyObligationSmelterPercentageOfRoyaltyWithRightToPurchase	0.333
CY2020Q2	hymc	Royalty Obligation Smelter Right To Repurchase Percentage Of Net Smelter Returns RoyaltyObligationSmelterRightToRepurchasePercentageOfNetSmelterReturns	0.005
CY2020Q2	hymc	Royalty Obligation Smelter Net Percent RoyaltyObligationSmelterNetPercent	0.015
CY2020	hymc	Royalty Obligation Amortization RoyaltyObligationAmortization	40000.00	USD
CY2020	us-gaap	Payments For Royalties PaymentsForRoyalties	500000	USD
CY2020Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	100000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.000
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4374000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	5832000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	374000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	422000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	37000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-1880000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4785000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4374000	USD
CY2020Q4	hymc	Shares Authorized SharesAuthorized	410000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	59901306	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	59901306	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	56594855	shares
CY2020Q4	hymc	Units Issued Price Per Share UnitsIssuedPricePerShare	9.00
CY2020Q2	hymc	Class Of Warrant Or Right Share Price Threshold To Call Warrants ClassOfWarrantOrRightSharePriceThresholdToCallWarrants	18.00
CY2020	hymc	Effective Income Tax Rate Reconciliation Recapitalization Transaction Amount EffectiveIncomeTaxRateReconciliationRecapitalizationTransactionAmount	157900000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	47044000	USD
CY2020	hymc	Volume Of Sales VolumeOfSales		oz
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13709000	USD
CY2019	hymc	Volume Of Sales VolumeOfSales		oz
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	30000.00	shares
CY2020	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	1800000	USD
CY2020Q2	hymc	Payments For Vesting Of Phantom Shares Number Of Shares PaymentsForVestingOfPhantomSharesNumberOfShares	1	shares
CY2020Q2	hymc	Payments For Vesting Of Phantom Shares Number Of Shares PaymentsForVestingOfPhantomSharesNumberOfShares	1	shares
CY2020Q2	hymc	Payments For Vesting Of Phantom Shares PaymentsForVestingOfPhantomShares	1800000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.000
CY2019Q4	hymc	Deferred Tax Assets Royalty DeferredTaxAssetsRoyalty	0	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	146785000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-24609000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	146785000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-24609000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-132670000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-98895000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-27861000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-20768000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-146785000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	24609000	USD
CY2020	hymc	Effective Income Tax Rate Reconciliation Recapitalization Transaction Amount EffectiveIncomeTaxRateReconciliationRecapitalizationTransactionAmount	157855000	USD
CY2019	hymc	Effective Income Tax Rate Reconciliation Recapitalization Transaction Amount EffectiveIncomeTaxRateReconciliationRecapitalizationTransactionAmount	0	USD
CY2020	hymc	Effective Income Tax Rate Reconciliation Cancellation Of Debt Income Amount EffectiveIncomeTaxRateReconciliationCancellationOfDebtIncomeAmount	15360000	USD
CY2019	hymc	Effective Income Tax Rate Reconciliation Cancellation Of Debt Income Amount EffectiveIncomeTaxRateReconciliationCancellationOfDebtIncomeAmount	0	USD
CY2020	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	1263000	USD
CY2019	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-3847000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	168000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	6000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-146800000	USD
CY2020	hymc	Effective Income Tax Rate Reconciliation Cancellation Of Debt Income Amount EffectiveIncomeTaxRateReconciliationCancellationOfDebtIncomeAmount	15400000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	24600000	USD
CY2019	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-3800000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	7684000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	146382000	USD
CY2020Q4	hymc	Deferred Tax Assets Mineral Properties DeferredTaxAssetsMineralProperties	39555000	USD
CY2019Q4	hymc	Deferred Tax Assets Mineral Properties DeferredTaxAssetsMineralProperties	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	30767000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	60840000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	21710000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	0	USD
CY2020Q4	hymc	Deferred Tax Assets Royalty DeferredTaxAssetsRoyalty	6292000	USD
CY2020Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	1935000	USD
CY2019Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	24369000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	997000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	927000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	405000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	257000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	197000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	191000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	15438000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	7701000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	609000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-89366000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	109733000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	256517000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	109700000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	256500000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	36600000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	683800000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	36600000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	193000000.0	USD
CY2020Q2	hymc	Gain Loss On Recapitalization GainLossOnRecapitalization	128500000	USD
CY2020Q2	hymc	Deferred Tax Asset Recapitalization DeferredTaxAssetRecapitalization	27200000	USD
CY2020Q2	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	94100000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-132670000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-98895000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34833211	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	301559	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34833211	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	301559	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.81
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-327.95
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.81
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-327.95
CY2019	hymc	Reverse Recapitalization Conversion Ratio ReverseRecapitalizationConversionRatio	0.112
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	47700000	shares
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	47044000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	109621000	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	26789000	USD
CY2020	us-gaap	Interest Expense Debt InterestExpenseDebt	43458000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	45000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	199000	USD
CY2020	hymc	Income Loss From Continuing Operations Before Reorganization Items And Net Income Taxes Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeReorganizationItemsAndNetIncomeTaxesNoncontrollingInterest	-132670000	USD
CY2020	us-gaap	Reorganization Items ReorganizationItems	0	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-132670000	USD
CY2020Q4	us-gaap	Assets Assets	232626000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13709000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	30669000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	16981000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-33941000	USD
CY2019	us-gaap	Interest Expense Debt InterestExpenseDebt	64846000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	0	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	797000	USD
CY2019	hymc	Income Loss From Continuing Operations Before Reorganization Items And Net Income Taxes Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeReorganizationItemsAndNetIncomeTaxesNoncontrollingInterest	-97990000	USD
CY2019	us-gaap	Reorganization Items ReorganizationItems	905000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-98895000	USD
CY2019Q4	us-gaap	Assets Assets	134637000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	154900000	USD
CY2020Q4	hymc	Royalty Obligation Metal Price Discount Rate RoyaltyObligationMetalPriceDiscountRate	0.050
CY2020	us-gaap	Interest Paid Net InterestPaidNet	5366000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	10239000	USD
CY2020	hymc	Allocate And Write Off Of Sellers Debt Issuance Costs AllocateAndWriteOffOfSellersDebtIssuanceCosts	8202000	USD
CY2019	hymc	Allocate And Write Off Of Sellers Debt Issuance Costs AllocateAndWriteOffOfSellersDebtIssuanceCosts	0	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1229000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2458000	USD
CY2020	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	94000	USD
CY2019	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	1025000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	900000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	500000	USD
CY2020Q3	us-gaap	Loss Contingency Damages Paid Value LossContingencyDamagesPaidValue	100000	USD
CY2020Q4	hymc	Royalty Agreement Payment Percentage Of Net Profit RoyaltyAgreementPaymentPercentageOfNetProfit	0.04
CY2020Q4	hymc	Royalty Agreement Payment Annual Advance RoyaltyAgreementPaymentAnnualAdvance	120000	USD
CY2020Q4	hymc	Royalty Agreement Payment Percentage Of Net Profit RoyaltyAgreementPaymentPercentageOfNetProfit	0.04
CY2020Q4	hymc	Royalty Agreement Payment Additional Incremental Payment RoyaltyAgreementPaymentAdditionalIncrementalPayment	120000	USD
CY2020Q4	hymc	Royalty Agreement Payment Annual Tons Mined Threshold RoyaltyAgreementPaymentAnnualTonsMinedThreshold	5000000.0	T
CY2020Q4	hymc	Royalty Agreement Payment Annual Tons Mined Threshold RoyaltyAgreementPaymentAnnualTonsMinedThreshold	5000000.0	T
CY2020Q4	hymc	Royalty Agreement Payment Additional Incremental Payment RoyaltyAgreementPaymentAdditionalIncrementalPayment	120000	USD
CY2020Q4	hymc	Royalty Agreement Payment Maximum Lease Payments RoyaltyAgreementPaymentMaximumLeasePayments	7600000	USD
CY2020	us-gaap	Payments To Acquire Royalty Interests In Mining Properties PaymentsToAcquireRoyaltyInterestsInMiningProperties	2700000	USD
CY2020Q4	hymc	Related Party Transaction Number Of Financial Institutions Debt Issued RelatedPartyTransactionNumberOfFinancialInstitutionsDebtIssued	5	financial_Institution
CY2020	hymc	Related Party Transaction Number Of Financial Institutions Considered Related Party RelatedPartyTransactionNumberOfFinancialInstitutionsConsideredRelatedParty	3	financial_Institution
CY2020Q4	hymc	Related Party Transaction Minimum Percentage Of Common Stock Held By Related Party Right To Nominate One Director RelatedPartyTransactionMinimumPercentageOfCommonStockHeldByRelatedPartyRightToNominateOneDirector	0.10
CY2020	us-gaap	Interest Expense Related Party InterestExpenseRelatedParty	31300000	USD
CY2019	us-gaap	Interest Expense Related Party InterestExpenseRelatedParty	57600000	USD
CY2020Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	71200000	USD
CY2019Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	497200000	USD

Files In Submission

Name	View Source	Status
0001718405-21-000029-index-headers.html	Edgar Link	pending
0001718405-21-000029-index.html	Edgar Link	pending
0001718405-21-000029.txt	Edgar Link	pending
0001718405-21-000029-xbrl.zip	Edgar Link	pending
exhibit211-subsidiaries.htm	Edgar Link	pending
exhibit231-consentofplante.htm	Edgar Link	pending
exhibit232-consentofm3engi.htm	Edgar Link	pending
exhibit233-consentofsteven.htm	Edgar Link	pending
exhibit234-consentofsrkcon.htm	Edgar Link	pending
exhibit235-consentofrichar.htm	Edgar Link	pending
exhibit311-certificationof.htm	Edgar Link	pending
exhibit312-certificationof.htm	Edgar Link	pending
exhibit321-certificationof.htm	Edgar Link	pending
exhibit322-certificationof.htm	Edgar Link	pending
exhibit45-warrantadjustmen.htm	Edgar Link	pending
exhibit951-minesafetydiscl.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
hymc-20201231.htm	Edgar Link	pending
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hymc-20201231_g2.jpg	Edgar Link	pending
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$HYMC
HYCROFT MINING HOLDING CORP Stock $hymc

2020 Q4 Form 10-K Financial Statement

#000171840521000029 Filed on March 24, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HYMC HYCROFT MINING HOLDING CORP Stock $hymc

2020 Q4 Form 10-K Financial Statement

#000171840521000029 Filed on March 24, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HYMC
HYCROFT MINING HOLDING CORP Stock $hymc