Organization and Recent Events	3 Months Ended
Mar. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Recent Events	1. Organization and Recent Events Vantage Drilling International, a Cayman Islands exempted company, is an international offshore drilling company focused on operating a fleet of modern, high specification drilling units. Our principal business is to contract drilling units, related equipment and work crews, primarily on a dayrate basis to drill oil and natural gas wells for our customers. Through our fleet of drilling units, we are a provider of offshore contract drilling services to major, national and independent oil and natural gas companies, focused on international markets. Additionally, for drilling units owned by others, we provide construction supervision services while under construction, preservation management services when stacked and operations and marketing services for operating rigs. On April 5, 2017, pursuant to a purchase and sale agreement with a third party, we completed the purchase of a class 154-44C jackup rig and related multi-year drilling contract for $13.0 million. A down payment of $1.3 million was made in February 2017 upon execution of the agreement and the remaining $11.7 million was paid at closing. The rig was renamed the Vantage 260. In August 2017, we substituted the Sapphire Driller, a Baker Marine Pacific Class 375 jack-up rig to fulfill the drilling contract. On October 19, 2017, we entered into a purchase and sale agreement to sell the Vantage 260 for $5.1 million. The transaction closed and the Vantage 260 was sold on February 26, 2018. Restructuring Agreement and Emergence from Voluntary Reorganization under Chapter 11 Proceeding On December 1, 2015, we and Vantage Drilling Company (“VDC”), our former parent company, entered into a restructuring support agreement (the “Restructuring Agreement”) with a majority of our secured creditors. Pursuant to the terms of the Restructuring Agreement, the Company agreed to pursue a pre-packaged plan of reorganization (the “Reorganization Plan”) under Chapter 11 of Title 11 of the United States Bankruptcy Code and VDC agreed to commence official liquidation proceedings under the laws of the Cayman Islands. On December 2, 2015, pursuant to the Restructuring Agreement, the Company acquired two subsidiaries responsible for the management of the Company from VDC in exchange for a $61.5 million promissory note (the “VDC Note”). As this transaction involved a reorganization of entities under common control, it was reflected in the consolidated financial statements, at carryover basis, on a retrospective basis. Effective as of the Company’s emergence from bankruptcy on February 10, 2016 (the “Effective Date”), VDC’s former equity interest in the Company was cancelled. Immediately following that event, the VDC Note was converted into 655,094 new ordinary shares of the reorganized Company (the “New Shares”) in accordance with the terms thereof, in satisfaction of the obligation thereunder, which, including accrued interest, totaled approximately $62.6 million as of such date. On December 3, 2015 (the “Petition Date”), the Company, certain of its subsidiaries and certain VDC subsidiaries who were guarantors of the Company’s pre-bankruptcy secured debt, filed the Reorganization Plan in the United States Bankruptcy Court for the District of Delaware (In re Vantage Drilling International (F/K/A Offshore Group Investment Limited), et al., Case No. 15-12422). On January 15, 2016, the District Court of Delaware confirmed the Company’s pre-packaged Reorganization Plan and the Company emerged from bankruptcy on the Effective Date. Pursuant to the terms of the Reorganization Plan, the pre-bankruptcy term loans and senior notes were retired on the Effective Date by issuing to the debtholders 4,344,959 units in the reorganized Company (the “Units”). Each Unit of securities originally consisted of one New Share and $172.61 of principal of the Company’s 1%/12% Step-Up Senior Secured Third Lien Convertible Notes due 2030 (the “Convertible Notes”), subject to adjustment upon the payment of interest in kind (“PIK interest”) and certain cases of redemption or conversion of the Convertible Notes, as well as share splits, share dividends, consolidation or reclassification of the New Shares. The New Shares and the Convertible Notes are subject to the terms of an agreement that prohibits the New Shares and Convertible Notes from being traded separately. The Convertible Notes are convertible into New Shares in certain circumstances, at a conversion price (subject to adjustment in accordance with the terms of the Indenture for the Convertible Notes), which was $95.60 as of the issue date. The Indenture for the Convertible Notes includes customary covenants that restrict, among other things, the granting of liens and customary events of default, including among other things, failure to issue securities upon conversion of the Convertible Notes. As of March 31, 2018, after taking into account the payment of PIK interest on the Convertible Notes to such date, each such Unit consisted of one New Share and $175.90 of principal of Convertible Notes. Other significant elements of the Reorganization Plan included: Second Amended and Restated Credit Agreement. The Company’s pre-petition credit agreement was amended and restated to (i) replace the $32.0 million revolving letter of credit commitment under its pre-petition facility with a new $32.0 million revolving letter of credit facility and (ii) repay the $150 million of outstanding borrowings with (a) $7.0 million of cash and (b) the issuance of $143.0 million initial term loans (the “2016 Term Loan Facility”). 10% Senior Secured Second Lien Notes. Holders of the Company’s pre-petition term loans and senior notes claims were eligible to participate in a rights offering conducted by the Company for $75.0 million of the Company’s new 10% Senior Secured Second Lien Notes due 2020 (the “10% Second Lien Notes”). In connection with this rights offering, certain creditors entered into a “backstop” agreement to purchase 10% Second Lien Notes if the offer was not fully subscribed. The premium paid to such creditors under the backstop agreement was approximately $2.2 million, which was paid $1.1 million in cash and $1.1 million in additional 10% Second Lien Notes, resulting in a total issued amount of $76.1 million of 10% Second Lien Notes and net cash proceeds to the Company of $73.9 million, after deducting the cash portion of the backstop premium. The Reorganization Plan allowed the Company to continue business operations during the court proceedings and maintain all operating assets and agreements. The Company had adequate liquidity prior to the filing and did not have to seek any debtor-in-possession financing. All trade payables, credits, wages and other related obligations were unimpaired by the Reorganization Plan. Other Events: Since July 2015, the Company has been cooperating in an investigation by the U.S. Department of Justice (“DOJ”) and the SEC arising from allegations that Hamylton Padilha, the Brazilian agent VDC used in the contracting of the Titanium Explorer drillship to Petroleo Brasileiro S.A. (“Petrobras”), and Mr. Hsin-Chi Su, a former member of the Board of Directors and a significant shareholder of our former parent company, VDC, had engaged in an alleged scheme to pay bribes to former Petrobras executives, in violation of the U.S. Foreign Corrupt Practices Act (“FCPA”). In August 2017, we received a letter from the DOJ acknowledging our full cooperation in the DOJ’s investigation and closing the investigation without any action against the Company. We have continued our cooperation in the investigation by the SEC into the same allegations and engaged in negotiations with the staff of the Division of Enforcement of the SEC to resolve their investigation. We have reached an agreement in principle with the staff relating to terms of a proposed offer of settlement, which is being presented to the Commission for approval. While there can be no assurance that the proposed offer of settlement will be accepted by the Commission, the Company believes the proposed resolution will become final in the second quarter of 2018. In connection with the proposed offer of settlement, we have accrued a liability in the amount of $5 million. If the Commission does not accept the proposed offer of settlement and the SEC determines that violations of the FCPA have occurred, the Company could be subject to civil and criminal sanctions, including monetary penalties, as well as additional requirements or changes to our business practices and compliance programs, any or all of which could have a material adverse effect on our business and financial condition. For more information about this matter, please see “Note 7. Commitments and Contingencies”.

1. Organization and Recent Events

Vantage Drilling International, a Cayman Islands exempted company, is an international offshore drilling company focused on operating a fleet of modern, high specification drilling units. Our principal business is to contract drilling units, related equipment and work crews, primarily on a dayrate basis to drill oil and natural gas wells for our customers. Through our fleet of drilling units, we are a provider of offshore contract drilling services to major, national and independent oil and natural gas companies, focused on international markets. Additionally, for drilling units owned by others, we provide construction supervision services while under construction, preservation management services when stacked and operations and marketing services for operating rigs.

On April 5, 2017, pursuant to a purchase and sale agreement with a third party, we completed the purchase of a class 154-44C jackup rig and related multi-year drilling contract for $13.0 million. A down payment of $1.3 million was made in February 2017 upon execution of the agreement and the remaining $11.7 million was paid at closing. The rig was renamed the Vantage 260. In August 2017, we substituted the Sapphire Driller, a Baker Marine Pacific Class 375 jack-up rig to fulfill the drilling contract. On October 19, 2017, we entered into a purchase and sale agreement to sell the Vantage 260 for $5.1 million. The transaction closed and the Vantage 260 was sold on February 26, 2018.

Restructuring Agreement and Emergence from Voluntary Reorganization under Chapter 11 Proceeding

On December 1, 2015, we and Vantage Drilling Company (“VDC”), our former parent company, entered into a restructuring support agreement (the “Restructuring Agreement”) with a majority of our secured creditors. Pursuant to the terms of the Restructuring Agreement, the Company agreed to pursue a pre-packaged plan of reorganization (the “Reorganization Plan”) under Chapter 11 of Title 11 of the United States Bankruptcy Code and VDC agreed to commence official liquidation proceedings under the laws of the Cayman Islands. On December 2, 2015, pursuant to the Restructuring Agreement, the Company acquired two subsidiaries responsible for the management of the Company from VDC in exchange for a $61.5 million promissory note (the “VDC Note”). As this transaction involved a reorganization of entities under common control, it was reflected in the consolidated financial statements, at carryover basis, on a retrospective basis. Effective as of the Company’s emergence from bankruptcy on February 10, 2016 (the “Effective Date”), VDC’s former equity interest in the Company was cancelled. Immediately following that event, the VDC Note was converted into 655,094 new ordinary shares of the reorganized Company (the “New Shares”) in accordance with the terms thereof, in satisfaction of the obligation thereunder, which, including accrued interest, totaled approximately $62.6 million as of such date.

On December 3, 2015 (the “Petition Date”), the Company, certain of its subsidiaries and certain VDC subsidiaries who were guarantors of the Company’s pre-bankruptcy secured debt, filed the Reorganization Plan in the United States Bankruptcy Court for the District of Delaware (In re Vantage Drilling International (F/K/A Offshore Group Investment Limited), et al., Case No. 15-12422). On January 15, 2016, the District Court of Delaware confirmed the Company’s pre-packaged Reorganization Plan and the Company emerged from bankruptcy on the Effective Date.

Pursuant to the terms of the Reorganization Plan, the pre-bankruptcy term loans and senior notes were retired on the Effective Date by issuing to the debtholders 4,344,959 units in the reorganized Company (the “Units”). Each Unit of securities originally consisted of one New Share and $172.61 of principal of the Company’s 1%/12% Step-Up Senior Secured Third Lien Convertible Notes due 2030 (the “Convertible Notes”), subject to adjustment upon the payment of interest in kind (“PIK interest”) and certain cases of redemption or conversion of the Convertible Notes, as well as share splits, share dividends, consolidation or reclassification of the New Shares. The New Shares and the Convertible Notes are subject to the terms of an agreement that prohibits the New Shares and Convertible Notes from being traded separately.

The Convertible Notes are convertible into New Shares in certain circumstances, at a conversion price (subject to adjustment in accordance with the terms of the Indenture for the Convertible Notes), which was $95.60 as of the issue date. The Indenture for the Convertible Notes includes customary covenants that restrict, among other things, the granting of liens and customary events of default, including among other things, failure to issue securities upon conversion of the Convertible Notes. As of March 31, 2018, after taking into account the payment of PIK interest on the Convertible Notes to such date, each such Unit consisted of one New Share and $175.90 of principal of Convertible Notes.

Other significant elements of the Reorganization Plan included:

Second Amended and Restated Credit Agreement. The Company’s pre-petition credit agreement was amended and restated to (i) replace the $32.0 million revolving letter of credit commitment under its pre-petition facility with a new $32.0 million revolving letter of credit facility and (ii) repay the $150 million of outstanding borrowings with (a) $7.0 million of cash and (b) the issuance of $143.0 million initial term loans (the “2016 Term Loan Facility”).

10% Senior Secured Second Lien Notes. Holders of the Company’s pre-petition term loans and senior notes claims were eligible to participate in a rights offering conducted by the Company for $75.0 million of the Company’s new 10% Senior Secured Second Lien Notes due 2020 (the “10% Second Lien Notes”). In connection with this rights offering, certain creditors entered into a “backstop” agreement to purchase 10% Second Lien Notes if the offer was not fully subscribed. The premium paid to such creditors under the backstop agreement was approximately $2.2 million, which was paid $1.1 million in cash and $1.1 million in additional 10% Second Lien Notes, resulting in a total issued amount of $76.1 million of 10% Second Lien Notes and net cash proceeds to the Company of $73.9 million, after deducting the cash portion of the backstop premium.

The Reorganization Plan allowed the Company to continue business operations during the court proceedings and maintain all operating assets and agreements. The Company had adequate liquidity prior to the filing and did not have to seek any debtor-in-possession financing. All trade payables, credits, wages and other related obligations were unimpaired by the Reorganization Plan.

Other Events: Since July 2015, the Company has been cooperating in an investigation by the U.S. Department of Justice (“DOJ”) and the SEC arising from allegations that Hamylton Padilha, the Brazilian agent VDC used in the contracting of the Titanium Explorer drillship to Petroleo Brasileiro S.A. (“Petrobras”), and Mr. Hsin-Chi Su, a former member of the Board of Directors and a significant shareholder of our former parent company, VDC, had engaged in an alleged scheme to pay bribes to former Petrobras executives, in violation of the U.S. Foreign Corrupt Practices Act (“FCPA”). In August 2017, we received a letter from the DOJ acknowledging our full cooperation in the DOJ’s investigation and closing the investigation without any action against the Company. We have continued our cooperation in the investigation by the SEC into the same allegations and engaged in negotiations with the staff of the Division of Enforcement of the SEC to resolve their investigation. We have reached an agreement in principle with the staff relating to terms of a proposed offer of settlement, which is being presented to the Commission for approval. While there can be no assurance that the proposed offer of settlement will be accepted by the Commission, the Company believes the proposed resolution will become final in the second quarter of 2018. In connection with the proposed offer of settlement, we have accrued a liability in the amount of $5 million. If the Commission does not accept the proposed offer of settlement and the SEC determines that violations of the FCPA have occurred, the Company could be subject to civil and criminal sanctions, including monetary penalties, as well as additional requirements or changes to our business practices and compliance programs, any or all of which could have a material adverse effect on our business and financial condition. For more information about this matter, please see “Note 7. Commitments and Contingencies”.