v2.4.0.8

Subsequent Events - Additional Information (Detail) |  |  | 1 Months Ended |  |  |  | 1 Months Ended |  | 1 Months Ended |  |  | 1 Months Ended |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 USD ($) | Mar. 31, 2013 RUB | Dec. 31, 2012 USD ($) | Jul. 31, 2008 Loan Agreement Alfa Bank USD ($) | Jul. 31, 2008 Loan Agreement Alfa Bank EUR (€) | Mar. 15, 2013 Notes Due Two Thousand Thirteen USD ($) | Mar. 31, 2013 Notes Due Two Thousand Thirteen Roust Trading Limited USD ($) | Mar. 01, 2013 Notes Due Two Thousand Thirteen Roust Trading Limited USD ($) | Apr. 30, 2013 Issuance of Debt Bilateral Facility Agreement USD ($) Installment | Apr. 07, 2013 Issuance of Debt Bilateral Facility Agreement USD ($) | Apr. 30, 2013 Issuance of Debt Bilateral Facility Agreement Maximum Agreement | Apr. 07, 2013 Issuance of Debt Bilateral Facility Agreement Maximum USD ($) | Jun. 05, 2013 Subsequent Event USD ($) | Jun. 05, 2013 Subsequent Event Roust Trading Limited | Jun. 05, 2013 Subsequent Event Senior Secured Notes Due 2018 USD ($) | Jun. 05, 2013 Subsequent Event Convertible Junior Secured Notes Due 2018 USD ($) | May 28, 2013 Subsequent Event Loan Agreement Alfa Bank USD ($) | May 28, 2013 Subsequent Event Loan Agreement Alfa Bank RUB | Jun. 07, 2013 Subsequent Event Loan Agreement MKB Bank USD ($) | Jun. 07, 2013 Subsequent Event Loan Agreement MKB Bank RUB
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt defaulted, principal amount |  |  |  |  |  | $ 257,900,000 | $ 20,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Bilateral Facility Agreement, principal amount | 50,000,000 |  | 0 |  |  |  |  | 50,000,000 |  |  |  | 100,000,000 |  |  | 465,000,000 | 200,000,000 |  |  |  |
Debt instrument maturity year |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2018 | 2018 |  |  |  |
Debt issuance date |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jun. 19, 2013 | Jun. 19, 2013 |  |  |  |
Common Stock, shares issued | 76,107,506 | 76,107,506 | 76,047,506 |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |
Percentage of voting securities control |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |
Common Stock, shares authorized | 120,000,000 | 120,000,000 | 120,000,000 |  |  |  |  |  |  |  |  |  | 90,000 |  |  |  |  |  |  |
Common Stock, par value | $ 0.01 |  | $ 0.01 |  |  |  |  |  |  |  |  |  | $ 0.01 |  |  |  |  |  |  |
Preferred Stock, shares authorized | 1,000,000 | 1,000,000 | 1,000,000 |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |
Preferred Stock, par value | $ 0.01 |  | $ 0.01 |  |  |  |  |  |  |  |  |  | $ 0.01 |  |  |  |  |  |  |
Number of bilateral facility agreement |  |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |
Interest rate percentage on issued debt |  |  |  |  |  |  |  |  |  | 13.75% |  |  |  |  |  |  |  |  |  |
Bilateral Facility Agreement,term |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |
Bilateral Facility Agreement. Arrangement fee |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |
Bilateral Facility Agreement. commitment fee |  |  |  |  |  |  |  |  | 10,300,000 |  |  |  |  |  |  |  |  |  |  |
Bilateral Facility Agreement. Number of installments payments |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |
Bilateral Facility Agreement. Break-up fee |  |  |  |  |  |  |  |  |  | 15,000,000 |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | 25,600,000 | 20,000,000 |  |  |  |  |  |  |  |  |  |  |  | 60,000,000 | 2,000,000,000 | 30,000,000 | 1,000,000,000
Initiation date |  |  |  | July 22, 2008 | July 22, 2008 |  |  |  |  |  |  |  |  |  |  |  |  |  | June 7, 2013 | June 7, 2013
Financial statements guarantees | $ 765,000,000 | 25,400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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