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v3.3.1.900

Investment in Qualified Affordable Housing (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Other expense | $ 186,614 | $ 187,510 | $ 181,515 |
Assets | 7,311,354 | 7,001,199 | 6,636,423 |
Amortization Method Qualified Affordable Housing Project Investments, Amortization | 6,700 | 6,900 |  |
Affordable Housing Tax Credits and Other Tax Benefits, Amount | 8,900 | 8,800 |  |
Affordable Housing Program Obligation | 20,311 | 16,629 |  |
Retained earnings | 507,505 | 484,484 |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 713,355 | 696,541 | 649,823 | $ 650,366
Income Tax Expense (Benefit) | 32,567 | 36,459 | 32,503 |
Net income | 81,012 | 83,957 | 76,869 |
Qualified Affordable Housing [Domain] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Equity investments | 51,247 | 48,911 |  |
Retained Earnings |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 507,505 | 484,484 | 458,719 | $ 441,605
Net income | $ 81,012 | 83,957 | 76,869 |
Accounting Standards Update 2014-01 [Member] | Assets [Member] | Restatement Adjustment [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Assets |  | 7,001,199 |  |
Accounting Standards Update 2014-01 [Member] | Assets [Member] | Scenario, Previously Reported [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Assets |  | 7,003,256 |  |
Accounting Standards Update 2014-01 [Member] | Retained Earnings | Restatement Adjustment [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Retained earnings |  | 484,484 |  |
Accounting Standards Update 2014-01 [Member] | Retained Earnings | Scenario, Previously Reported [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Retained earnings |  | 486,541 |  |
Accounting Standards Update 2014-01 [Member] | Equity [Member] | Restatement Adjustment [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | 696,541 |  |
Accounting Standards Update 2014-01 [Member] | Equity [Member] | Scenario, Previously Reported [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | 698,598 |  |
Net Income [Domain] | Accounting Standards Update 2014-01 [Member] | Restatement Adjustment [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Net income |  | 83,957 | 76,869 |
Net Income [Domain] | Accounting Standards Update 2014-01 [Member] | Scenario, Previously Reported [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Net income |  | 84,090 | 77,227 |
Income Tax Expense [Member] | Accounting Standards Update 2014-01 [Member] | Restatement Adjustment [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Income Tax Expense (Benefit) |  | 36,459 | 32,503 |
Income Tax Expense [Member] | Accounting Standards Update 2014-01 [Member] | Scenario, Previously Reported [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Income Tax Expense (Benefit) |  | 28,602 | 25,131 |
Other Expense [Member] | Accounting Standards Update 2014-01 [Member] | Restatement Adjustment [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Other expense |  | 187,510 | 181,515 |
Other Expense [Member] | Accounting Standards Update 2014-01 [Member] | Scenario, Previously Reported [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Other expense |  | $ 195,234 | $ 188,529 |

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