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v2.4.1.9

Consolidated Statement of Comprehensive Income (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Statement of Comprehensive Income [Abstract] |  |  |
Net Income | $ 288,604,579 us-gaap_NetIncomeLoss | $ 222,929,949 us-gaap_NetIncomeLoss | $ 168,586,840 us-gaap_NetIncomeLoss
Other comprehensive income (loss) before tax: |  |  |
Foreign currency translation adjustments | (1,104,023)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax | 48,989 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax | 328,976 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax
Unrealized gains (losses) on derivatives | (1,475,702)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
Unrealized gains (losses) on available-for sales securities, net | (13,229,414)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax | 6,701,020 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax | 7,230,048 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
Other comprehensive income (loss), before tax | (15,809,139)us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent | 6,750,009 us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent | 7,559,024 us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent
Provision for income taxes related to components of other comprehensive income | (5,146,791)us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1 | 2,345,357 us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1 | 2,530,516 us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
Other comprehensive Income (loss), net of tax | (10,662,348)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent | 4,404,652 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent | 5,028,508 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Comprehensive Income | $ 277,942,231 us-gaap_ComprehensiveIncomeNetOfTax | $ 227,334,601 us-gaap_ComprehensiveIncomeNetOfTax | $ 173,615,348 us-gaap_ComprehensiveIncomeNetOfTax

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