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v2.4.1.9

Quarterly Financial Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Operating results: |  |  |  |  |  |  |  |  |  |  |
Interest income | $ 65,251 us-gaap_InterestAndDividendIncomeOperating | $ 63,351 us-gaap_InterestAndDividendIncomeOperating | $ 57,993 us-gaap_InterestAndDividendIncomeOperating | $ 55,475 us-gaap_InterestAndDividendIncomeOperating | $ 57,492 us-gaap_InterestAndDividendIncomeOperating | $ 57,420 us-gaap_InterestAndDividendIncomeOperating | $ 57,719 us-gaap_InterestAndDividendIncomeOperating | $ 53,525 us-gaap_InterestAndDividendIncomeOperating | $ 242,070 us-gaap_InterestAndDividendIncomeOperating | $ 226,156 us-gaap_InterestAndDividendIncomeOperating | $ 231,384 us-gaap_InterestAndDividendIncomeOperating
Interest expense | (23,903)us-gaap_InterestExpense | (23,350)us-gaap_InterestExpense | (21,151)us-gaap_InterestExpense | (19,059)us-gaap_InterestExpense | (19,528)us-gaap_InterestExpense | (21,725)us-gaap_InterestExpense | (21,416)us-gaap_InterestExpense | (18,302)us-gaap_InterestExpense | (87,463)us-gaap_InterestExpense | (80,971)us-gaap_InterestExpense | (120,705)us-gaap_InterestExpense
Net interest income | 41,348 us-gaap_InterestIncomeExpenseNet | 40,001 us-gaap_InterestIncomeExpenseNet | 36,842 us-gaap_InterestIncomeExpenseNet | 36,416 us-gaap_InterestIncomeExpenseNet | 37,964 us-gaap_InterestIncomeExpenseNet | 35,695 us-gaap_InterestIncomeExpenseNet | 36,303 us-gaap_InterestIncomeExpenseNet | 35,223 us-gaap_InterestIncomeExpenseNet | 154,607 us-gaap_InterestIncomeExpenseNet | 145,185 us-gaap_InterestIncomeExpenseNet | 110,679 us-gaap_InterestIncomeExpenseNet
Non-interest income | 10,686 us-gaap_NoninterestIncome | 28,519 us-gaap_NoninterestIncome | 1,475 us-gaap_NoninterestIncome | (4,671)us-gaap_NoninterestIncome | 24,918 us-gaap_NoninterestIncome | 5,346 us-gaap_NoninterestIncome | 53,568 us-gaap_NoninterestIncome | 58,522 us-gaap_NoninterestIncome | 36,009 us-gaap_NoninterestIncome | 142,353 us-gaap_NoninterestIncome | 91,662 us-gaap_NoninterestIncome
Operating expenses | (26,462)us-gaap_OperatingExpenses | (21,406)us-gaap_OperatingExpenses | (22,282)us-gaap_OperatingExpenses | (19,973)us-gaap_OperatingExpenses | (19,670)us-gaap_OperatingExpenses | (22,320)us-gaap_OperatingExpenses | (24,430)us-gaap_OperatingExpenses | (20,187)us-gaap_OperatingExpenses | 90,123 us-gaap_OperatingExpenses | 86,607 us-gaap_OperatingExpenses | 65,633 us-gaap_OperatingExpenses
Net income | $ 27,122 us-gaap_NetIncomeLoss | $ 45,097 us-gaap_NetIncomeLoss | $ 16,017 us-gaap_NetIncomeLoss | $ 12,333 us-gaap_NetIncomeLoss | $ 25,135 us-gaap_NetIncomeLoss | $ 21,929 us-gaap_NetIncomeLoss | $ 65,573 us-gaap_NetIncomeLoss | $ 60,160 us-gaap_NetIncomeLoss | $ 100,569 us-gaap_NetIncomeLoss | $ 173,246 us-gaap_NetIncomeLoss | $ 131,769 us-gaap_NetIncomeLoss
Per share data: |  |  |  |  |  |  |  |  |  |  |
Net income - basic | $ 0.32 us-gaap_EarningsPerShareBasic | $ 0.53 us-gaap_EarningsPerShareBasic | $ 0.19 us-gaap_EarningsPerShareBasic | $ 0.14 us-gaap_EarningsPerShareBasic | $ 0.30 us-gaap_EarningsPerShareBasic | $ 0.26 us-gaap_EarningsPerShareBasic | $ 0.78 us-gaap_EarningsPerShareBasic | $ 0.72 us-gaap_EarningsPerShareBasic | $ 1.18 us-gaap_EarningsPerShareBasic | $ 2.05 us-gaap_EarningsPerShareBasic | $ 1.61 us-gaap_EarningsPerShareBasic
Net income - diluted | $ 0.31 us-gaap_EarningsPerShareDiluted | $ 0.50 us-gaap_EarningsPerShareDiluted | $ 0.18 us-gaap_EarningsPerShareDiluted | $ 0.14 us-gaap_EarningsPerShareDiluted | $ 0.29 us-gaap_EarningsPerShareDiluted | $ 0.25 us-gaap_EarningsPerShareDiluted | $ 0.71 us-gaap_EarningsPerShareDiluted | $ 0.69 us-gaap_EarningsPerShareDiluted | $ 1.15 us-gaap_EarningsPerShareDiluted | $ 1.94 us-gaap_EarningsPerShareDiluted | $ 1.59 us-gaap_EarningsPerShareDiluted
Regular dividends declared per common share | $ 0.28 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.28 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.28 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.28 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.28 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.28 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.28 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.28 us-gaap_CommonStockDividendsPerShareDeclared | $ 1.12 us-gaap_CommonStockDividendsPerShareDeclared | $ 1.12 us-gaap_CommonStockDividendsPerShareDeclared | $ 1.00 us-gaap_CommonStockDividendsPerShareDeclared

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