2017 Q4 Form 10-K Financial Statement
#000127344118000010 Filed on February 27, 2018
Income Statement
| Concept | 2017 Q4 | 2016 Q4 | 2015 Q4 |
|---|---|---|---|
| Revenue | $127.2M | $91.60M | $54.80M |
| YoY Change | 38.86% | 67.15% | -44.59% |
| Cost Of Revenue | $37.00M | $31.90M | $26.50M |
| YoY Change | 15.99% | 20.38% | -19.21% |
| Gross Profit | $90.10M | $59.70M | $28.30M |
| YoY Change | 50.92% | 110.95% | -57.19% |
| Gross Profit Margin | 70.83% | 65.17% | 51.64% |
| Selling, General & Admin | $12.10M | $12.60M | $6.900M |
| YoY Change | -3.97% | 82.61% | -37.84% |
| % of Gross Profit | 13.43% | 21.11% | 24.38% |
| Research & Development | |||
| YoY Change | |||
| % of Gross Profit | |||
| Depreciation & Amortization | $37.30M | $35.00M | $33.10M |
| YoY Change | 6.57% | 5.74% | -27.73% |
| % of Gross Profit | 41.4% | 58.63% | 116.96% |
| Operating Expenses | $51.40M | $53.50M | -$177.9M |
| YoY Change | -3.93% | -130.07% | -424.04% |
| Operating Profit | $38.70M | $6.200M | $206.2M |
| YoY Change | 524.19% | -96.99% | 1741.07% |
| Interest Expense | -$25.00M | -$6.100M | -$4.700M |
| YoY Change | 309.84% | 29.79% | -117.6% |
| % of Operating Profit | -64.6% | -98.39% | -2.28% |
| Other Income/Expense, Net | $500.0K | $0.00 | $0.00 |
| YoY Change | 4330384257086918.0% | -140.62% | -200.0% |
| Pretax Income | -$22.00M | -$157.5M | -$124.6M |
| YoY Change | -86.03% | 26.4% | -45.16% |
| Income Tax | $17.80M | -$30.10M | -$41.90M |
| % Of Pretax Income | |||
| Net Earnings | -$40.80M | -$127.4M | -$82.70M |
| YoY Change | -67.97% | 54.05% | -69.35% |
| Net Earnings / Revenue | -32.08% | -139.08% | -150.91% |
| Basic Earnings Per Share | |||
| Diluted Earnings Per Share | -$103.4K | -$343.3K | -$292.0K |
| COMMON SHARES | |||
| Basic Shares Outstanding | 388.4M shares | 347.3M shares | 274.5M shares |
| Diluted Shares Outstanding |
Balance Sheet
| Concept | 2017 Q4 | 2016 Q4 | 2015 Q4 |
|---|---|---|---|
| SHORT-TERM ASSETS | |||
| Cash & Short-Term Investments | $37.40M | $25.20M | $151.6M |
| YoY Change | 48.41% | -83.38% | -55.34% |
| Cash & Equivalents | $12.33M | $25.18M | $145.3M |
| Short-Term Investments | $25.10M | $0.00 | $6.300M |
| Other Short-Term Assets | $9.893M | $26.70M | $5.848M |
| YoY Change | -62.95% | 356.57% | -25.37% |
| Inventory | $7.075M | $7.766M | $19.06M |
| Prepaid Expenses | |||
| Receivables | $45.35M | $45.70M | $29.22M |
| Other Receivables | $40.80M | $32.90M | $28.70M |
| Total Short-Term Assets | $145.2M | $131.7M | $234.4M |
| YoY Change | 10.3% | -43.83% | -49.43% |
| LONG-TERM ASSETS | |||
| Property, Plant & Equipment | $1.099B | $1.067B | $789.0M |
| YoY Change | 3.06% | 35.19% | -30.11% |
| Goodwill | $102.6M | $102.6M | $102.6M |
| YoY Change | 0.0% | 0.0% | 0.0% |
| Intangibles | |||
| YoY Change | |||
| Long-Term Investments | $19.10M | ||
| YoY Change | |||
| Other Assets | $6.112M | $23.63M | $16.86M |
| YoY Change | -74.13% | 40.11% | 83.23% |
| Total Long-Term Assets | $1.284B | $1.236B | $911.7M |
| YoY Change | 3.9% | 35.6% | -27.09% |
| TOTAL ASSETS | |||
| Total Short-Term Assets | $145.2M | $131.7M | $234.4M |
| Total Long-Term Assets | $1.284B | $1.236B | $911.7M |
| Total Assets | $1.430B | $1.368B | $1.146B |
| YoY Change | 4.51% | 19.35% | -33.13% |
| SHORT-TERM LIABILITIES | |||
| YoY Change | |||
| Accounts Payable | $126.2M | $107.1M | $70.80M |
| YoY Change | 17.83% | 51.27% | -37.01% |
| Accrued Expenses | |||
| YoY Change | |||
| Deferred Revenue | |||
| YoY Change | |||
| Short-Term Debt | $0.00 | $0.00 | $0.00 |
| YoY Change | |||
| Long-Term Debt Due | $0.00 | ||
| YoY Change | |||
| Total Short-Term Liabilities | $157.0M | $155.0M | $73.99M |
| YoY Change | 1.25% | 109.52% | -67.02% |
| LONG-TERM LIABILITIES | |||
| Long-Term Debt | $256.5M | $197.1M | $0.00 |
| YoY Change | 30.17% | ||
| Other Long-Term Liabilities | $8.980M | $11.43M | $4.815M |
| YoY Change | -21.4% | 137.28% | -86.88% |
| Total Long-Term Liabilities | $336.3M | $353.9M | $70.49M |
| YoY Change | -4.96% | 402.06% | -66.91% |
| TOTAL LIABILITIES | |||
| Total Short-Term Liabilities | $157.0M | $155.0M | $73.99M |
| Total Long-Term Liabilities | $336.3M | $353.9M | $70.49M |
| Total Liabilities | $493.3M | $508.9M | $144.5M |
| YoY Change | -3.07% | 252.24% | -66.97% |
| SHAREHOLDERS EQUITY | |||
| Retained Earnings | -$401.2M | -$494.0M | -$28.41M |
| YoY Change | -18.78% | 1638.91% | -111.85% |
| Common Stock | $10.30M | $10.30M | $10.19M |
| YoY Change | -0.08% | 1.15% | -0.04% |
| Preferred Stock | |||
| YoY Change | |||
| Treasury Stock (at cost) | |||
| YoY Change | |||
| Treasury Stock Shares | |||
| Shareholders Equity | $936.3M | $859.0M | $1.002B |
| YoY Change | |||
| Total Liabilities & Shareholders Equity | $1.430B | $1.368B | $1.146B |
| YoY Change | 4.51% | 19.35% | -33.13% |
Cashflow Statement
| Concept | 2017 Q4 | 2016 Q4 | 2015 Q4 |
|---|---|---|---|
| OPERATING ACTIVITIES | |||
| Net Income | -$40.80M | -$127.4M | -$82.70M |
| YoY Change | -67.97% | 54.05% | -69.35% |
| Depreciation, Depletion And Amortization | $37.30M | $35.00M | $33.10M |
| YoY Change | 6.57% | 5.74% | -27.73% |
| Cash From Operating Activities | $67.10M | $6.600M | $3.700M |
| YoY Change | 916.67% | 78.38% | -95.16% |
| INVESTING ACTIVITIES | |||
| Capital Expenditures | -$79.40M | -$58.10M | -$41.80M |
| YoY Change | 36.66% | 39.0% | -70.33% |
| Acquisitions | |||
| YoY Change | |||
| Other Investing Activities | -$8.900M | $5.600M | -$400.0K |
| YoY Change | -258.93% | -1500.0% | -100.92% |
| Cash From Investing Activities | -$88.20M | -$52.40M | -$42.30M |
| YoY Change | 68.32% | 23.88% | -56.57% |
| FINANCING ACTIVITIES | |||
| Cash Dividend Paid | |||
| YoY Change | |||
| Common Stock Issuance & Retirement, Net | |||
| YoY Change | |||
| Debt Paid & Issued, Net | |||
| YoY Change | |||
| Cash From Financing Activities | 18.80M | 17.00M | -3.300M |
| YoY Change | 10.59% | -615.15% | 3200.0% |
| NET CHANGE | |||
| Cash From Operating Activities | 67.10M | 6.600M | 3.700M |
| Cash From Investing Activities | -88.20M | -52.40M | -42.30M |
| Cash From Financing Activities | 18.80M | 17.00M | -3.300M |
| Net Change In Cash | -2.300M | -28.80M | -41.90M |
| YoY Change | -92.01% | -31.26% | 98.58% |
| FREE CASH FLOW | |||
| Cash From Operating Activities | $67.10M | $6.600M | $3.700M |
| Capital Expenditures | -$79.40M | -$58.10M | -$41.80M |
| Free Cash Flow | $146.5M | $64.70M | $45.50M |
| YoY Change | 126.43% | 42.2% | -79.06% |
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TotalOtherLongTermAssets
|
169602000 | USD |
| CY2017Q4 | gte |
Total Other Long Term Assets
TotalOtherLongTermAssets
|
185150000 | USD |
| CY2017 | gte |
Valuation Allowance Deferred Tax Asset Increase Decrease Sale Of Business Unit
ValuationAllowanceDeferredTaxAssetIncreaseDecreaseSaleOfBusinessUnit
|
-212100000 | USD |
| CY2016Q4 | us-gaap |
Accounts Payable And Accrued Liabilities Current
AccountsPayableAndAccruedLiabilitiesCurrent
|
107051000 | USD |
| CY2017Q4 | us-gaap |
Accounts Payable And Accrued Liabilities Current
AccountsPayableAndAccruedLiabilitiesCurrent
|
126171000 | USD |
| CY2016Q4 | us-gaap |
Accounts Payable And Accrued Liabilities Current And Noncurrent
AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
|
107051000 | USD |
| CY2017Q4 | us-gaap |
Accounts Payable And Accrued Liabilities Current And Noncurrent
AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
|
126171000 | USD |
| CY2016Q4 | us-gaap |
Accounts Payable Trade Current And Noncurrent
AccountsPayableTradeCurrentAndNoncurrent
|
80072000 | USD |
| CY2017Q4 | us-gaap |
Accounts Payable Trade Current And Noncurrent
AccountsPayableTradeCurrentAndNoncurrent
|
99146000 | USD |
| CY2016Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
45698000 | USD |
| CY2017Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
45353000 | USD |
| CY2016Q4 | us-gaap |
Accrued Royalties Current And Noncurrent
AccruedRoyaltiesCurrentAndNoncurrent
|
4542000 | USD |
| CY2017Q4 | us-gaap |
Accrued Royalties Current And Noncurrent
AccruedRoyaltiesCurrentAndNoncurrent
|
6867000 | USD |
| CY2016Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
2262781000 | USD |
| CY2017Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
2202921000 | USD |
| CY2016Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
1342656000 | USD |
| CY2017Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
1327244000 | USD |
| CY2016Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
|
0 | USD |
| CY2017Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
|
0 | USD |
| CY2015 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
0 | USD |
| CY2016 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
5691000 | USD |
| CY2017 | us-gaap |
Amortization Of Financing Costs
AmortizationOfFinancingCosts
|
2415000 | USD |
| CY2015 | us-gaap |
Asset Impairment Charges
AssetImpairmentCharges
|
323918000 | USD |
| CY2016 | us-gaap |
Asset Impairment Charges
AssetImpairmentCharges
|
616649000 | USD |
| CY2017 | us-gaap |
Asset Impairment Charges
AssetImpairmentCharges
|
1514000 | USD |
| CY2015Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
33224000 | USD |
| CY2016Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
43357000 | USD |
| CY2017Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
31564000 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
2789000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
3825000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Cash Paid To Settle
AssetRetirementObligationCashPaidToSettle
|
6217000 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Cash Paid To Settle
AssetRetirementObligationCashPaidToSettle
|
605000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Cash Paid To Settle
AssetRetirementObligationCashPaidToSettle
|
1300000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Cash Paid To Settle
AssetRetirementObligationCashPaidToSettle
|
1336000 | USD |
| CY2016Q4 | us-gaap |
Asset Retirement Obligation Current
AssetRetirementObligationCurrent
|
5215000 | USD |
| CY2017Q4 | us-gaap |
Asset Retirement Obligation Current
AssetRetirementObligationCurrent
|
323000 | USD |
| CY2016Q4 | us-gaap |
Asset Retirement Obligation Legally Restricted Assets Fair Value
AssetRetirementObligationLegallyRestrictedAssetsFairValue
|
12000000 | USD |
| CY2017Q4 | us-gaap |
Asset Retirement Obligation Legally Restricted Assets Fair Value
AssetRetirementObligationLegallyRestrictedAssetsFairValue
|
12700000 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
2606000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
3403000 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
872000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
1507000 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
-6856000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
-4095000 | USD |
| CY2016Q4 | us-gaap |
Asset Retirement Obligations Noncurrent
AssetRetirementObligationsNoncurrent
|
38142000 | USD |
| CY2017Q4 | us-gaap |
Asset Retirement Obligations Noncurrent
AssetRetirementObligationsNoncurrent
|
31241000 | USD |
| CY2016Q4 | us-gaap |
Assets
Assets
|
1367896000 | USD |
| CY2017Q4 | us-gaap |
Assets
Assets
|
1429619000 | USD |
| CY2016Q4 | us-gaap |
Assets Current
AssetsCurrent
|
131685000 | USD |
| CY2017Q4 | us-gaap |
Assets Current
AssetsCurrent
|
145245000 | USD |
| CY2016Q4 | us-gaap |
Assets Fair Value Disclosure
AssetsFairValueDisclosure
|
578000 | USD |
| CY2017Q4 | us-gaap |
Assets Fair Value Disclosure
AssetsFairValueDisclosure
|
44504000 | USD |
| CY2015 | us-gaap |
Available For Sale Securities Gross Realized Gain Loss Net
AvailableForSaleSecuritiesGrossRealizedGainLossNet
|
0 | USD |
| CY2016 | us-gaap |
Available For Sale Securities Gross Realized Gain Loss Net
AvailableForSaleSecuritiesGrossRealizedGainLossNet
|
0 | USD |
| CY2017 | us-gaap |
Available For Sale Securities Gross Realized Gain Loss Net
AvailableForSaleSecuritiesGrossRealizedGainLossNet
|
-111000 | USD |
| CY2015 | us-gaap |
Business Combination Bargain Purchase Gain Recognized Amount
BusinessCombinationBargainPurchaseGainRecognizedAmount
|
0 | USD |
| CY2016 | us-gaap |
Business Combination Bargain Purchase Gain Recognized Amount
BusinessCombinationBargainPurchaseGainRecognizedAmount
|
929000 | USD |
| CY2016 | us-gaap |
Business Combination Consideration Transferred Equity Interests Issued And Issuable
BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
|
25800000 | USD |
| CY2017Q4 | us-gaap |
Business Combination Contingent Consideration Liability Current
BusinessCombinationContingentConsiderationLiabilityCurrent
|
4000000 | USD |
| CY2015 | us-gaap |
Business Combination Integration Related Costs
BusinessCombinationIntegrationRelatedCosts
|
0 | USD |
| CY2016 | us-gaap |
Business Combination Integration Related Costs
BusinessCombinationIntegrationRelatedCosts
|
7325000 | USD |
| CY2017 | us-gaap |
Business Combination Integration Related Costs
BusinessCombinationIntegrationRelatedCosts
|
0 | USD |
| us-gaap |
Capitalized Costs Of Unproved Properties Excluded From Amortization
CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
|
66159000 | USD | |
| us-gaap |
Capitalized Costs Of Unproved Properties Excluded From Amortization
CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
|
464948000 | USD | |
| CY2015 | us-gaap |
Capitalized Costs Of Unproved Properties Excluded From Amortization
CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
|
8795000 | USD |
| CY2016 | us-gaap |
Capitalized Costs Of Unproved Properties Excluded From Amortization
CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
|
329149000 | USD |
| CY2017 | us-gaap |
Capitalized Costs Of Unproved Properties Excluded From Amortization
CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
|
60845000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Costs Proved Properties
CapitalizedCostsProvedProperties
|
412319000 | USD |
| CY2017Q4 | us-gaap |
Capitalized Costs Proved Properties
CapitalizedCostsProvedProperties
|
629081000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Costs Unproved Properties
CapitalizedCostsUnprovedProperties
|
647774000 | USD |
| CY2017Q4 | us-gaap |
Capitalized Costs Unproved Properties
CapitalizedCostsUnprovedProperties
|
464948000 | USD |
| CY2016Q1 | us-gaap |
Cash Acquired From Acquisition
CashAcquiredFromAcquisition
|
200000 | USD |
| CY2015Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
145342000 | USD |
| CY2016Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
25175000 | USD |
| CY2017Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
12326000 | USD |
| CY2014Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
335722000 | USD |
| CY2015Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
148751000 | USD |
| CY2016Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
43267000 | USD |
| CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
26678000 | USD |
| CY2015 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
-186971000 | USD |
| CY2015 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
-187000000 | USD |
| CY2016 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
-105500000 | USD |
| CY2016 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
-105484000 | USD |
| CY2017 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
|
-16589000 | USD |
| CY2016Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
| CY2017Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
| CY2016Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.001 | |
| CY2017Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
0.001 | |
| CY2017Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
570000000 | shares |
| CY2016Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
390807194 | shares |
| CY2017Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
385191042 | shares |
| CY2016Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
390807194 | shares |
| CY2017Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
385191042 | shares |
| CY2016Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
10303000 | USD |
| CY2017Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
10295000 | USD |
| CY2015 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
645468000 | USD |
| CY2016 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
942800000 | USD |
| CY2017 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
341228000 | USD |
| CY2015 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
1070000 | USD |
| CY2016 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
1818000 | USD |
| CY2017 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
3457000 | USD |
| CY2015 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
14313000 | USD |
| CY2016 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
18304000 | USD |
| CY2017 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
20865000 | USD |
| CY2015 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
15383000 | USD |
| CY2016 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
20122000 | USD |
| CY2017 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
24322000 | USD |
| CY2016Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
7917000 | USD |
| CY2017Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
6458000 | USD |
| CY2015 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
-115442000 | USD |
| CY2016 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
-204791000 | USD |
| CY2017 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
44716000 | USD |
| CY2016Q4 | us-gaap |
Deferred Income Tax Assets Net
DeferredIncomeTaxAssetsNet
|
1611000 | USD |
| CY2017Q4 | us-gaap |
Deferred Income Tax Assets Net
DeferredIncomeTaxAssetsNet
|
57310000 | USD |
| CY2015 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-115442000 | USD |
| CY2016 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-204791000 | USD |
| CY2017 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
44716000 | USD |
| CY2016Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
107230000 | USD |
| CY2017Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
28417000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Capital Loss Carryforwards
DeferredTaxAssetsCapitalLossCarryforwards
|
32278000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Capital Loss Carryforwards
DeferredTaxAssetsCapitalLossCarryforwards
|
52575000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
342874000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
245960000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
|
28893000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
1611000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
57310000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
74604000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
60460000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Foreign
DeferredTaxAssetsTaxCreditCarryforwardsForeign
|
48341000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Foreign
DeferredTaxAssetsTaxCreditCarryforwardsForeign
|
70157000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
341263000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
188650000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
105619000 | USD |
| CY2015 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
177900000 | USD |
| CY2016 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
130200000 | USD |
| CY2017 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
126800000 | USD |
| CY2016Q4 | us-gaap |
Derivative Instruments In Hedges Assets At Fair Value
DerivativeInstrumentsInHedgesAssetsAtFairValue
|
578000 | USD |
| CY2017Q4 | us-gaap |
Derivative Instruments In Hedges Assets At Fair Value
DerivativeInstrumentsInHedgesAssetsAtFairValue
|
302000 | USD |
| CY2016Q4 | us-gaap |
Derivative Liabilities Current
DerivativeLiabilitiesCurrent
|
3824000 | USD |
| CY2017Q4 | us-gaap |
Derivative Liabilities Current
DerivativeLiabilitiesCurrent
|
21151000 | USD |
| CY2015 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-0.94 | |
| CY2016 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-1.45 | |
| CY2017 | us-gaap |
Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
|
-0.08 | |
| CY2015 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
-6516000 | USD |
| CY2016 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
354000 | USD |
| CY2017 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
-1557000 | USD |
| CY2015 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2016 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2017 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2016Q4 | us-gaap |
Employee Related Liabilities Current And Noncurrent
EmployeeRelatedLiabilitiesCurrentAndNoncurrent
|
8152000 | USD |
| CY2017Q4 | us-gaap |
Employee Related Liabilities Current And Noncurrent
EmployeeRelatedLiabilitiesCurrentAndNoncurrent
|
8767000 | USD |
| CY2016Q4 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
|
10000000 | USD |
| CY2017Q4 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
|
13700000 | USD |
| CY2017 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
|
P1Y7M7D | |
| CY2015 | us-gaap |
Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
|
17242000 | USD |
| CY2016 | us-gaap |
Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
|
1469000 | USD |
| CY2017 | us-gaap |
Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
|
-2067000 | USD |
| CY2015 | us-gaap |
Foreign Currency Transaction Gain Loss Unrealized
ForeignCurrencyTransactionGainLossUnrealized
|
8380000 | USD |
| CY2016 | us-gaap |
Foreign Currency Transaction Gain Loss Unrealized
ForeignCurrencyTransactionGainLossUnrealized
|
1428000 | USD |
| CY2017 | us-gaap |
Foreign Currency Transaction Gain Loss Unrealized
ForeignCurrencyTransactionGainLossUnrealized
|
-837000 | USD |
| CY2017 | us-gaap |
Foreign Earnings Repatriated
ForeignEarningsRepatriated
|
7100000 | USD |
| CY2017 | us-gaap |
Gain Loss On Sale Of Business
GainLossOnSaleOfBusiness
|
-44385000 | USD |
| CY2015 | us-gaap |
General And Administrative Expense
GeneralAndAdministrativeExpense
|
32353000 | USD |
| CY2016 | us-gaap |
General And Administrative Expense
GeneralAndAdministrativeExpense
|
33218000 | USD |
| CY2017 | us-gaap |
General And Administrative Expense
GeneralAndAdministrativeExpense
|
39014000 | USD |
| CY2016Q4 | us-gaap |
Goodwill
Goodwill
|
102581000 | USD |
| CY2017Q4 | us-gaap |
Goodwill
Goodwill
|
102581000 | USD |
| CY2017 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
| CY2015 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
321285000 | USD |
| CY2016 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
615985000 | USD |
| CY2017 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
1514000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
-14061000 | USD |
| CY2016 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
-23986000 | USD |
| CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
|
-51215000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
|
-354027000 | USD |
| CY2016 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
|
-626248000 | USD |
| CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Foreign
IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
|
88545000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
-368088000 | USD |
| CY2016 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
-650234000 | USD |
| CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
37330000 | USD |
| CY2017 | us-gaap |
Income Tax Credits And Adjustments
IncomeTaxCreditsAndAdjustments
|
20900000 | USD |
| CY2015 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-100059000 | USD |
| CY2016 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-184669000 | USD |
| CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
69038000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
37691000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
47675000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
52269000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Disposition Of Business
IncomeTaxReconciliationDispositionOfBusiness
|
0 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Disposition Of Business
IncomeTaxReconciliationDispositionOfBusiness
|
0 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Disposition Of Business
IncomeTaxReconciliationDispositionOfBusiness
|
-12527000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
-13087000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
-9799000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
12310000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
-128831000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
-227582000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
13066000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
|
919000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
|
1955000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
|
2001000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-2521000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-1466000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-2331000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
2354000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
1998000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
1056000 | USD |
| CY2015 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
39422000 | USD |
| CY2016 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
64067000 | USD |
| CY2017 | us-gaap |
Income Taxes Paid
IncomeTaxesPaid
|
54505000 | USD |
| CY2016Q4 | us-gaap |
Income Taxes Receivable
IncomeTaxesReceivable
|
26393000 | USD |
| CY2017Q4 | us-gaap |
Income Taxes Receivable
IncomeTaxesReceivable
|
40831000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
-33743000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
-9691000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
15617000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Derivative Assets And Liabilities
IncreaseDecreaseInDerivativeAssetsAndLiabilities
|
0 | USD |
| CY2016 | us-gaap |
Increase Decrease In Derivative Assets And Liabilities
IncreaseDecreaseInDerivativeAssetsAndLiabilities
|
3546000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Derivative Assets And Liabilities
IncreaseDecreaseInDerivativeAssetsAndLiabilities
|
0 | USD |
| CY2015 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
1571000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
-5510000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
78000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Operating Capital
IncreaseDecreaseInOperatingCapital
|
39048000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Operating Capital
IncreaseDecreaseInOperatingCapital
|
11337000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Operating Capital
IncreaseDecreaseInOperatingCapital
|
29217000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Prepaid Expenses Other
IncreaseDecreaseInPrepaidExpensesOther
|
-152000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Prepaid Expenses Other
IncreaseDecreaseInPrepaidExpensesOther
|
615000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Prepaid Expenses Other
IncreaseDecreaseInPrepaidExpensesOther
|
-2674000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Receivables
IncreaseDecreaseInReceivables
|
-44365000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Receivables
IncreaseDecreaseInReceivables
|
29000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Receivables
IncreaseDecreaseInReceivables
|
2494000 | USD |
| CY2015 | us-gaap |
Interest Expense Debt
InterestExpenseDebt
|
0 | USD |
| CY2016 | us-gaap |
Interest Expense Debt
InterestExpenseDebt
|
14145000 | USD |
| CY2017 | us-gaap |
Interest Expense Debt
InterestExpenseDebt
|
13882000 | USD |
| CY2015 | us-gaap |
Interest Income Operating
InterestIncomeOperating
|
1369000 | USD |
| CY2016 | us-gaap |
Interest Income Operating
InterestIncomeOperating
|
2368000 | USD |
| CY2017 | us-gaap |
Interest Income Operating
InterestIncomeOperating
|
1209000 | USD |
| CY2015 | us-gaap |
Interest Paid
InterestPaid
|
0 | USD |
| CY2016 | us-gaap |
Interest Paid
InterestPaid
|
5624000 | USD |
| CY2017 | us-gaap |
Interest Paid
InterestPaid
|
9684000 | USD |
| CY2016Q4 | us-gaap |
Inventory Net
InventoryNet
|
7766000 | USD |
| CY2017Q4 | us-gaap |
Inventory Net
InventoryNet
|
7075000 | USD |
| CY2015 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
2633000 | USD |
| CY2016 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
664000 | USD |
| CY2017 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
0 | USD |
| CY2016Q4 | us-gaap |
Investments Fair Value Disclosure
InvestmentsFairValueDisclosure
|
0 | USD |
| CY2017Q4 | us-gaap |
Investments Fair Value Disclosure
InvestmentsFairValueDisclosure
|
44202000 | USD |
| CY2015 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
4000000 | USD |
| CY2016 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
3200000 | USD |
| CY2017 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
3200000 | USD |
| CY2016Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
1367896000 | USD |
| CY2017Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
1429619000 | USD |
| CY2016Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
155029000 | USD |
| CY2017Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
156969000 | USD |
| CY2016Q4 | us-gaap |
Liabilities Fair Value Disclosure
LiabilitiesFairValueDisclosure
|
7731000 | USD |
| CY2017Q4 | us-gaap |
Liabilities Fair Value Disclosure
LiabilitiesFairValueDisclosure
|
32581000 | USD |
| CY2016Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
353880000 | USD |
| CY2017Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
336315000 | USD |
| CY2016Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
197083000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
256542000 | USD |
| CY2016Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
197083000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
256542000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-9277000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
407052000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
39127000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-233483000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-605932000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-243803000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
62305000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
93042000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
189644000 | USD |
| CY2015 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-268029000 | USD |
| CY2016 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-465565000 | USD |
| CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-31708000 | USD |
| CY2016Q4 | us-gaap |
Oil And Gas Property Full Cost Method Net
OilAndGasPropertyFullCostMethodNet
|
1060093000 | USD |
| CY2017Q4 | us-gaap |
Oil And Gas Property Full Cost Method Net
OilAndGasPropertyFullCostMethodNet
|
1094029000 | USD |
| CY2015 | us-gaap |
Oil And Gas Sales Revenue
OilAndGasSalesRevenue
|
276011000 | USD |
| CY2016 | us-gaap |
Oil And Gas Sales Revenue
OilAndGasSalesRevenue
|
289269000 | USD |
| CY2017 | us-gaap |
Oil And Gas Sales Revenue
OilAndGasSalesRevenue
|
421734000 | USD |
| CY2015 | us-gaap |
Operating Costs And Expenses
OperatingCostsAndExpenses
|
75565000 | USD |
| CY2016 | us-gaap |
Operating Costs And Expenses
OperatingCostsAndExpenses
|
86925000 | USD |
| CY2017 | us-gaap |
Operating Costs And Expenses
OperatingCostsAndExpenses
|
109869000 | USD |
| CY2016Q4 | us-gaap |
Operating Loss Carryforwards
OperatingLossCarryforwards
|
257023000 | USD |
| CY2017Q4 | us-gaap |
Operating Loss Carryforwards
OperatingLossCarryforwards
|
199138000 | USD |
| CY2016Q4 | us-gaap |
Other Accrued Liabilities Current And Noncurrent
OtherAccruedLiabilitiesCurrentAndNoncurrent
|
14285000 | USD |
| CY2017Q4 | us-gaap |
Other Accrued Liabilities Current And Noncurrent
OtherAccruedLiabilitiesCurrentAndNoncurrent
|
11391000 | USD |
| CY2016Q4 | us-gaap |
Other Assets
OtherAssets
|
198706000 | USD |
| CY2017Q4 | us-gaap |
Other Assets
OtherAssets
|
227814000 | USD |
| CY2016Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
23626000 | USD |
| CY2017Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
6112000 | USD |
| CY2016Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
11425000 | USD |
| CY2017Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
20115000 | USD |
| CY2015 | us-gaap |
Other Nonrecurring Income
OtherNonrecurringIncome
|
502000 | USD |
| CY2016 | us-gaap |
Other Nonrecurring Income
OtherNonrecurringIncome
|
0 | USD |
| CY2017 | us-gaap |
Other Nonrecurring Income
OtherNonrecurringIncome
|
0 | USD |
| CY2015 | us-gaap |
Other Operating Income Expense Net
OtherOperatingIncomeExpenseNet
|
502000 | USD |
| CY2016 | us-gaap |
Other Operating Income Expense Net
OtherOperatingIncomeExpenseNet
|
0 | USD |
| CY2017 | us-gaap |
Other Operating Income Expense Net
OtherOperatingIncomeExpenseNet
|
0 | USD |
| CY2016Q4 | us-gaap |
Other Prepaid Expense Current
OtherPrepaidExpenseCurrent
|
5482000 | USD |
| CY2017Q4 | us-gaap |
Other Prepaid Expense Current
OtherPrepaidExpenseCurrent
|
2516000 | USD |
| CY2015 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
9999000 | USD |
| CY2016 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
0 | USD |
| CY2017 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
17916000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | USD |
| CY2016 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
488196000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | USD |
| CY2015 | us-gaap |
Payments To Acquire Oil And Gas Property And Equipment
PaymentsToAcquireOilAndGasPropertyAndEquipment
|
156639000 | USD |
| CY2016 | us-gaap |
Payments To Acquire Oil And Gas Property And Equipment
PaymentsToAcquireOilAndGasPropertyAndEquipment
|
127789000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Oil And Gas Property And Equipment
PaymentsToAcquireOilAndGasPropertyAndEquipment
|
251041000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Trading Securities Heldforinvestment
PaymentsToAcquireTradingSecuritiesHeldforinvestment
|
0 | USD |
| CY2016 | us-gaap |
Payments To Acquire Trading Securities Heldforinvestment
PaymentsToAcquireTradingSecuritiesHeldforinvestment
|
0 | USD |
| CY2017 | us-gaap |
Payments To Acquire Trading Securities Heldforinvestment
PaymentsToAcquireTradingSecuritiesHeldforinvestment
|
11000000 | USD |
| CY2016Q4 | us-gaap |
Prepaid Taxes
PrepaidTaxes
|
54100000 | USD |
| CY2015 | us-gaap |
Proceeds From Debt Net Of Issuance Costs
ProceedsFromDebtNetOfIssuanceCosts
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Debt Net Of Issuance Costs
ProceedsFromDebtNetOfIssuanceCosts
|
256065000 | USD |
| CY2017 | us-gaap |
Proceeds From Debt Net Of Issuance Costs
ProceedsFromDebtNetOfIssuanceCosts
|
167043000 | USD |
| CY2015 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
0 | USD |
| CY2017 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
32968000 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
722000 | USD |
| CY2016 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
128273000 | USD |
| CY2017 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
|
2325000 | USD |
| CY2017 | us-gaap |
Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Sale Of Oil And Gas Property And Equipment
ProceedsFromSaleOfOilAndGasPropertyAndEquipment
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Sale Of Oil And Gas Property And Equipment
ProceedsFromSaleOfOilAndGasPropertyAndEquipment
|
6000000 | USD |
| CY2017 | us-gaap |
Proceeds From Sale Of Oil And Gas Property And Equipment
ProceedsFromSaleOfOilAndGasPropertyAndEquipment
|
0 | USD |
| CY2016Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
3329390000 | USD |
| CY2017Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
3302145000 | USD |
| CY2016Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
1066609000 | USD |
| CY2017Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
1099224000 | USD |
| CY2016Q4 | us-gaap |
Property Plant And Equipment Other Net
PropertyPlantAndEquipmentOtherNet
|
6516000 | USD |
| CY2017Q4 | us-gaap |
Property Plant And Equipment Other Net
PropertyPlantAndEquipmentOtherNet
|
5195000 | USD |
| CY2015 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
0 | USD |
| CY2016 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
252181000 | USD |
| CY2017 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
110000000 | USD |
| CY2015Q4 | us-gaap |
Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
|
92000 | USD |
| CY2016Q4 | us-gaap |
Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
|
8322000 | USD |
| CY2017Q4 | us-gaap |
Restricted Cash And Cash Equivalents At Carrying Value
RestrictedCashAndCashEquivalentsAtCarryingValue
|
11787000 | USD |
| CY2015Q4 | us-gaap |
Restricted Cash And Cash Equivalents Noncurrent
RestrictedCashAndCashEquivalentsNoncurrent
|
3317000 | USD |
| CY2016Q4 | us-gaap |
Restricted Cash And Cash Equivalents Noncurrent
RestrictedCashAndCashEquivalentsNoncurrent
|
9770000 | USD |
| CY2017Q4 | us-gaap |
Restricted Cash And Cash Equivalents Noncurrent
RestrictedCashAndCashEquivalentsNoncurrent
|
2565000 | USD |
| CY2015 | us-gaap |
Results Of Operations Depreciation Depletion Amortization And Accretion
ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion
|
176386000 | USD |
| CY2016 | us-gaap |
Results Of Operations Depreciation Depletion Amortization And Accretion
ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion
|
139535000 | USD |
| CY2017 | us-gaap |
Results Of Operations Depreciation Depletion Amortization And Accretion
ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion
|
131335000 | USD |
| CY2016Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
-493972000 | USD |
| CY2017Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
-401204000 | USD |
| CY2015 | us-gaap |
Severance Costs1
SeveranceCosts1
|
8990000 | USD |
| CY2016 | us-gaap |
Severance Costs1
SeveranceCosts1
|
1319000 | USD |
| CY2017 | us-gaap |
Severance Costs1
SeveranceCosts1
|
1287000 | USD |
| CY2015 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
2733000 | USD |
| CY2016 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
6339000 | USD |
| CY2017 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
9775000 | USD |
| CY2015 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Based Liabilities Paid
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid
|
1392000 | USD |
| CY2016 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Based Liabilities Paid
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid
|
1234000 | USD |
| CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Based Liabilities Paid
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid
|
564000 | USD |
| CY2012Q2 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant
ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
|
39806100 | shares |
| CY2012Q2 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant
ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
|
23306100 | shares |
| CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
|
5044267 | shares |
| CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
|
4.33 | |
| CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod
|
1396667 | shares |
| CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
|
911154 | shares |
| CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
|
2029035 | shares |
| CY2015 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
1.24 | |
| CY2016 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
1.14 | |
| CY2017 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
|
1.11 | |
| CY2016Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
9239478 | shares |
| CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
8960692 | shares |
| CY2016Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
4.16 | |
| CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
3.65 | |
| CY2017 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
0.00 | |
| CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
|
8792816 | shares |
| CY2017Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
|
3.67 | |
| CY2017 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice
|
4.65 | |
| CY2017 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
|
4.79 | |
| CY2017 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
|
2.54 | |
| CY2017 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P2Y10M24D | |
| CY2015 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
|
6800000 | USD |
| CY2016 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
|
2800000 | USD |
| CY2017 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
|
2500000 | USD |
| CY2017 | us-gaap |
Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2
SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2
|
P2Y6M | |
| CY2017 | us-gaap |
Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2
SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2
|
P2Y10M24D | |
| CY2015 | us-gaap |
Stock Issued During Period Shares Share Based Compensation
StockIssuedDuringPeriodSharesShareBasedCompensation
|
390000 | shares |
| CY2016 | us-gaap |
Stock Issued During Period Shares Share Based Compensation
StockIssuedDuringPeriodSharesShareBasedCompensation
|
2165370 | shares |
| CY2017 | us-gaap |
Stock Issued During Period Shares Share Based Compensation
StockIssuedDuringPeriodSharesShareBasedCompensation
|
0 | shares |
| CY2017 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
0 | shares |
| CY2016Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
858987000 | USD |
| CY2017Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
936335000 | USD |
| CY2015Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
1001642000 | USD |
| CY2016Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
858987000 | USD |
| CY2017Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
936335000 | USD |
| CY2015 | us-gaap |
Tangible Asset Impairment Charges
TangibleAssetImpairmentCharges
|
323918000 | USD |
| CY2016 | us-gaap |
Tangible Asset Impairment Charges
TangibleAssetImpairmentCharges
|
616649000 | USD |
| CY2017 | us-gaap |
Tangible Asset Impairment Charges
TangibleAssetImpairmentCharges
|
1514000 | USD |
| CY2016Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
38939000 | USD |
| CY2017Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
9324000 | USD |
| CY2015 | us-gaap |
Trading Gains Losses
TradingGainsLosses
|
-1335000 | USD |
| CY2016 | us-gaap |
Trading Gains Losses
TradingGainsLosses
|
-3925000 | USD |
| CY2017 | us-gaap |
Trading Gains Losses
TradingGainsLosses
|
0 | USD |
| CY2016Q4 | us-gaap |
Trading Securities
TradingSecurities
|
0 | USD |
| CY2017Q4 | us-gaap |
Trading Securities
TradingSecurities
|
25055000 | USD |
| CY2016Q4 | us-gaap |
Trading Securities Equity
TradingSecuritiesEquity
|
0 | USD |
| CY2017Q4 | us-gaap |
Trading Securities Equity
TradingSecuritiesEquity
|
19147000 | USD |
| CY2017 | us-gaap |
Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
|
-152600000 | USD |
| CY2015 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
285333869 | shares |
| CY2016 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
320851538 | shares |
| CY2017 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
396683593 | shares |
| CY2017 | us-gaap |
Derivatives Methods Of Accounting Nonhedging Derivatives
DerivativesMethodsOfAccountingNonhedgingDerivatives
|
<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Derivatives</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company records derivative instruments on its balance sheet at fair value as either an asset or liability with changes in fair value recognized in the consolidated statements of operations as financial instruments gains or losses. While the Company utilizes derivative instruments to manage the price risk attributable to its expected oil production and foreign exchange risk, it has elected not to designate its derivative instruments as accounting hedges under the accounting guidance.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></div> | |
| CY2017 | us-gaap |
Nature Of Operations
NatureOfOperations
|
<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Description of Business</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Gran Tierra Energy Inc., a Delaware corporation (the “Company” or “Gran Tierra”), is a publicly traded company focused on oil and natural gas exploration and production in Colombia. The Company also had business activities in Brazil until </font><font style="font-family:inherit;font-size:10pt;">June 30, 2017</font><font style="font-family:inherit;font-size:10pt;">, and in Peru until </font><font style="font-family:inherit;font-size:10pt;">December 18, 2017</font><font style="font-family:inherit;font-size:10pt;">.</font></div></div> | |
| CY2017 | us-gaap |
Use Of Estimates
UseOfEstimates
|
<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Use of estimates </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates made by management include: oil and natural gas reserves and related present value of future cash flows; depreciation, depletion, amortization and impairment (“DD&A”); impairment assessments of goodwill; timing of transfers from oil and gas properties not subject to depletion to the depletable base; asset retirement obligations; determining the value of the consideration transferred and the net identifiable assets acquired and liabilities assumed in connection with business combinations and determining goodwill; assessments of the likely outcome of legal and other contingencies; income taxes; stock-based compensation; and determining the fair value of derivatives and investment. Although management believes these estimates are reasonable, changes in facts and circumstances or discovery of new information may result in revised estimates and actual results may differ from these estimates. </font></div></div> |
