2.2.0.7 false Condensed Consolidated Statements of Operations (Unaudited) (USD $) 0120 - Statement - Condensed Consolidated Statements of Operations (Unaudited) true false In Thousands, except Per Share data false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 4 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 3 Net revenues and other income 1 us-gaap_RevenuesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 4 Management fees, net 2 us-gaap_InvestmentAdvisoryFees us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 true true false false 46868000 46868 false false false 2 true true false false 36031000 36031 false false false 3 true true false false 89545000 89545 false false false 4 true true false false 70458000 70458 false false false xbrli:monetaryItemType monetary Fees earned for providing investment advice, research and other services for customers. Such services may include the investment management of mutual funds and separate accounts, and are generally based upon the size of the funds managed. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Chapter 4 -Paragraph 9, 51, 59, 80 -IssueDate 2006-05-01 false 5 Performance fees, net 2 us-gaap_PerformanceFees us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 22371000 22371 false false false 2 false true false false 37942000 37942 false false false 3 false true false false 25088000 25088 false false false 4 false true false false 48759000 48759 false false false xbrli:monetaryItemType monetary Revenues earned by the entity that is based on the investment results achieved, typically for management of certain institutional accounts and hedge or private equity funds. In the case of hedge funds, for example, the performance-related compensation is referred to as carried interest, whereby the fund manager is entitled to a certain percentage of the fund's gains. Excludes fees based upon a small percentage of the assets under management, which are not performance-related fees. No authoritative reference available. false 6 Administration, service and distribution fees, net 2 glg_AdministrationServiceAndDistributionFeesNet glg false credit duration Administration, service, and distribution fees, net. false false false false false false false false false false false verboselabel false 1 false true false false 7672000 7672 false false false 2 false true false false 5937000 5937 false false false 3 false true false false 15016000 15016 false false false 4 false true false false 11410000 11410 false false false xbrli:monetaryItemType monetary Administration, service, and distribution fees, net. No authoritative reference available. false 7 Other 2 us-gaap_RevenueOtherFinancialServices us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 308000 308 false false false 2 false true false false 6232000 6232 false false false 3 false true false false 1290000 1290 false false false 4 false true false false 7229000 7229 false false false xbrli:monetaryItemType monetary Fees and other service revenues recognized in the period that are not otherwise specified in the taxonomy. No authoritative reference available. true 8 Total net revenues and other income 2 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 77219000 77219 false false false 2 false true false false 86142000 86142 false false false 3 false true false false 130939000 130939 false false false 4 false true false false 137856000 137856 false false false xbrli:monetaryItemType monetary Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 false 9 Expenses 1 us-gaap_CostsAndExpensesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 10 Compensation, benefits and profit share 2 us-gaap_LaborAndRelatedExpense us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -121612000 -121612 false false false 2 false true false false -171930000 -171930 false false false 3 false true false false -222952000 -222952 false false false 4 false true false false -318586000 -318586 false false false xbrli:monetaryItemType monetary The aggregate amount of expenditures for salaries, wages, profit sharing and incentive compensation, and other employee benefits, including share-based compensation, and pension and other postretirement benefit expense. No authoritative reference available. false 11 General, administrative and other 2 us-gaap_SellingGeneralAndAdministrativeExpense us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -32302000 -32302 false false false 2 false true false false -25426000 -25426 false false false 3 false true false false -59050000 -59050 false false false 4 false true false false -47743000 -47743 false false false xbrli:monetaryItemType monetary The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 4 -Paragraph 5A false 12 Amortization of intangible assets 2 us-gaap_AmortizationOfIntangibleAssets us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -853000 -853 false false false 2 false true false false -833000 -833 false false false 3 false true false false -1737000 -1737 false false false 4 false true false false -833000 -833 false false false xbrli:monetaryItemType monetary The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) false 13 Third party, distribution, administration and service fees 2 glg_ThirdPartyDistributionAdministrationAndServiceFees glg false debit duration Third party distribution, administration and service fees. false false false false false false false false false false true negatedtotal false 1 false true false false -811000 -811 false false false 2 false true false false -665000 -665 false false false 3 false true false false -2142000 -2142 false false false 4 false true false false -665000 -665 false false false xbrli:monetaryItemType monetary Third party distribution, administration and service fees. No authoritative reference available. true 14 Total expenses 2 us-gaap_CostsAndExpenses us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false -155578000 -155578 false false false 2 false true false false -198854000 -198854 false false false 3 false true false false -285881000 -285881 false false false 4 false true false false -367827000 -367827 false false false xbrli:monetaryItemType monetary Total costs of sales and operating expenses for the period. No authoritative reference available. true 15 Loss from operations 1 us-gaap_OperatingIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -78359000 -78359 false false false 2 false true false false -112712000 -112712 false false false 3 false true false false -154942000 -154942 false false false 4 false true false false -229971000 -229971 false false false xbrli:monetaryItemType monetary The net result for the period of deducting operating expenses from operating revenues. No authoritative reference available. false 16 Realized loss on available-for-sale investments 1 us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -955000 -955 false false false 2 false false false false 0 0 false false false 3 false true false false -917000 -917 false false false 4 false true false false -21217000 -21217 false false false xbrli:monetaryItemType monetary This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments of the subject investments in debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 16 false 17 Gain on debt extinguishment 1 us-gaap_GainsLossesOnExtinguishmentOfDebt us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 84821000 84821 false false false 3 false false false false 0 0 false false false 4 false true false false 84821000 84821 false false false xbrli:monetaryItemType monetary Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 26 -Paragraph 20, 21 false 18 Gain on business combination - negative goodwill 1 us-gaap_GainOnPurchaseOfBusiness us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 21122000 21122 false false false 3 false false false false 0 0 false false false 4 false true false false 21122000 21122 false false false xbrli:monetaryItemType monetary Amount of the excess of the fair value of acquired net assets over the cost of an acquired business after pro rata reduction of the amounts that otherwise would have been assigned to acquired assets except financial assets other than investments accounted for by the equity method, assets to be disposed of by sale, deferred tax assets, prepaid assets relating to pension and postretirement benefit plans, and other current assets. This amount is considered an extraordinary item and often referred to as negative goodwill. This element is gross of the related tax effect. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 44, 45, 46 false 19 Fair value movement in trading securities 1 us-gaap_GainLossOnDerivativeInstrumentsHeldForTradingPurposesNet us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -455000 -455 false false false 2 false false false false 0 0 false false false 3 false true false false 22000 22 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Aggregate net gain and losses (whether realized or unrealized) on all derivative instruments held for trading purposes whether or not settled physically. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 02-3 -Paragraph 8 false 20 Interest income 1 us-gaap_InvestmentIncomeInterest us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 162000 162 false false false 2 false true false false 291000 291 false false false 3 false true false false 417000 417 false false false 4 false true false false 649000 649 false false false xbrli:monetaryItemType monetary Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 false 21 Interest expense 1 us-gaap_InterestExpense us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false -2697000 -2697 false false false 2 false true false false -3619000 -3619 false false false 3 false true false false -5998000 -5998 false false false 4 false true false false -6567000 -6567 false false false xbrli:monetaryItemType monetary The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 9 -Subsection II Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 true 22 Loss before income taxes 1 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -82304000 -82304 false false false 2 false true false false -10097000 -10097 false false false 3 false true false false -161418000 -161418 false false false 4 false true false false -151163000 -151163 false false false xbrli:monetaryItemType monetary Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 false 23 Income tax benefit / (expense) 1 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false -1315000 -1315 false false false 2 false true false false -1934000 -1934 false false false 3 false true false false 7964000 7964 false false false 4 false true false false -2552000 -2552 false false false xbrli:monetaryItemType monetary The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b true 24 Net loss 1 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -83619000 -83619 false false false 2 false true false false -12031000 -12031 false false false 3 false true false false -153454000 -153454 false false false 4 false true false false -153715000 -153715 false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) false 25 Less non-controlling interests: 1 us-gaap_MinorityInterestInNetIncomeLossOfConsolidatedEntitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 26 Share of (income)/losses 2 glg_ShareOfLossAttributableToNonControllingInterests glg false credit duration Share of loss attributable to non controlling interests. false false false false false false false false false false false verboselabel false 1 false true false false 10079000 10079 false false false 2 false true false false -1794000 -1794 false false false 3 false true false false 19067000 19067 false false false 4 false true false false 20227000 20227 false false false xbrli:monetaryItemType monetary Share of loss attributable to non controlling interests. No authoritative reference available. false 27 Cumulative dividends on exchangeable shares 2 glg_CumulativeDividendsOnExchangeableShares glg false credit duration Cumulative dividends on exchangeable shares. false false false false false false false false false false false totallabel false 1 false true false false -1057000 -1057 false false false 2 false true false false -10552000 -10552 false false false 3 false true false false -1057000 -1057 false false false 4 false true false false -11147000 -11147 false false false xbrli:monetaryItemType monetary Cumulative dividends on exchangeable shares. No authoritative reference available. true 28 Net loss attributable to common stockholders 1 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 true true false false -74597000 -74597 false false false 2 true true false false -24377000 -24377 false false false 3 true true false false -135444000 -135444 false false false 4 true true false false -144635000 -144635 false false false xbrli:monetaryItemType monetary Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 9 true 29 Net loss per share - basic and diluted 1 glg_EarningPerShareBasicAndDiluted glg false na duration Earning per share basic and diluted. false false false false false false false false false false false verboselabel true 1 true true false false -0.32 -0.32 false false false 2 true true false false -0.11 -0.11 false false false 3 true true false false -0.59 -0.59 false false false 4 true true false false -0.67 -0.67 false false false us-types:perShareItemType decimal Earning per share basic and diluted. No authoritative reference available. false 30 Weighted average common stock outstanding - basic and diluted (in thousands) 1 glg_WeightedAverageNumberOfSharesOutstandingBasicAndDiluted glg false na duration Weighted average number of shares outstanding basic and diluted. false false false false false false false false false false false verboselabel false 1 false true false false 230675000 230675 false false false 2 false true false false 216814000 216814 false false false 3 false true false false 230006000 230006 false false false 4 false true false false 216789000 216789 false false false xbrli:sharesItemType shares Weighted average number of shares outstanding basic and diluted. No authoritative reference available. false 4 28 false Thousands Thousands NoRounding false true