Label	Element	Value
Predecessor [Member]
Stock Issued Value Rights Offering	chpe_StockIssuedValueRightsOffering	$ 50,027,000
Stock Issued Value Settlement Of Claim	chpe_StockIssuedValueSettlementOfClaim	898,914,000
Adjustments To Additional Paid In Capital Issued Warrants	chpe_AdjustmentsToAdditionalPaidInCapitalIssuedWarrants	118,000
Stock Issued Value Backstop Premium	chpe_StockIssuedValueBackstopPremium	4,000
Additional Paid-in Capital [Member] | Predecessor [Member]
Stock Issued Value Rights Offering	chpe_StockIssuedValueRightsOffering	49,985,000
Stock Issued Value Settlement Of Claim	chpe_StockIssuedValueSettlementOfClaim	898,510,000
Cancellation Of Equity Value	chpe_CancellationOfEquityValue	425,425,000
Adjustments To Additional Paid In Capital Issued Warrants	chpe_AdjustmentsToAdditionalPaidInCapitalIssuedWarrants	118,000
Common Stock [Member] | Predecessor [Member]
Stock Issued Value Rights Offering	chpe_StockIssuedValueRightsOffering	$ 42,000
Stock Issued Shares Backstop Premium	chpe_StockIssuedSharesBackstopPremium	367,030
Stock Issued Value Settlement Of Claim	chpe_StockIssuedValueSettlementOfClaim	$ 404,000
Cancellation Of Equity Value	chpe_CancellationOfEquityValue	$ 14,000
Cancellation Of Equity Shares	chpe_CancellationOfEquityShares	1,382,288
Stock Issued Shares Rights Offering	chpe_StockIssuedSharesRightsOffering	4,197,210
Stock Issued Shares Settlement Of Claims	chpe_StockIssuedSharesSettlementOfClaims	40,417,902
Stock Issued Value Backstop Premium	chpe_StockIssuedValueBackstopPremium	$ 4,000
Retained Earnings [Member] | Predecessor [Member]
Cancellation Of Equity Value	chpe_CancellationOfEquityValue	$ (425,439,000)