Junior Subordinated Debentures (Narrative) (Detail) - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
Jun. 30, 2014 |
---|---|---|---|
Subordinated Borrowing [Line Items] | |||
Percentage ownership interest in subsidiary trusts | 100.00% | ||
Common securities, approximate percentage of junior subordinated debentures | 3.00% | ||
Trust preferred securities, approximate percentage of junior subordinated debentures | 97.00% | ||
Junior subordinated debentures | $ 249,493 | $ 249,493 | $ 249,493 |
Consecutive quarters of deferred payment | 20 | ||
Junior Subordinated Debt | |||
Subordinated Borrowing [Line Items] | |||
Debt, weighted average interest rate | 2.47% | ||
Debt, Hedge Adjusted Weighted Average Interest Rate | 3.28% | ||
Tier One Risk Based Capital | $ 60,500 | ||
Tier Two Risk Based Capital | 181,500 | ||
Cash Flow Hedge of Junior Subordinated Debentures | Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swaps and Caps | |||
Subordinated Borrowing [Line Items] | |||
Notional amount | $ 225,000 |