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Acquisitions (Tables) | 6 Months Ended
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Jun. 30, 2018
Business Combinations [Abstract] |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed | The following table summarizes the consideration paid, fair values of the Cascade assets acquired and liabilities assumed, and the resulting goodwill. All amounts were finalized in the first quarter of 2018.
| As Recorded | Fair Value |  | As Recorded
As of May 30, 2017 | by Cascade | Adjustments |  | by the Company
Assets acquired: |  |  |  |
Cash and cash equivalents | $ | 246.8 |  | $ | — |  |  | $ | 246.8 |
Investment securities | 476.7 |  | 4.9 |  | (1) | 481.6 |
Loans held for investment | 2,111.0 |  | (31.7 | ) | (2) | 2,079.3 |
Mortgage loans held for sale | 10.3 |  | — |  |  | 10.3 |
Allowance for loan loss | (24.0 | ) | 24.0 |  | (3) | — |
Premises and equipment | 46.6 |  | 0.1 |  | (4) | 46.7 |
Other real estate owned ("OREO") | 1.2 |  | — |  |  | 1.2 |
Core deposit intangible assets | — |  | 48.0 |  | (5) | 48.0 |
Deferred tax assets, net | 47.6 |  | (20.9 | ) | (6) | 26.7 |
Other assets | 98.6 |  | 2.1 |  | (7) | 100.7 |
Total assets acquired | 3,014.8 |  | 26.5 |  |  | 3,041.3 |
Liabilities assumed: |  |  |  |
Deposits | 2,669.9 |  | (0.9 | ) | (8) | 2,669.0 |
Accounts Payable and Accrued Expense | 62.2 |  | 1.9 |  | (9) | 64.1 |
Total liabilities assumed | 2,732.1 |  | 1.0 |  |  | 2,733.1 |
Net assets acquired | $ | 282.7 |  | $ | 25.5 |  |  | $ | 308.2 |
Consideration paid: |  |  |  |
Cash |  |  |  | $ | 155.0 |
Class A common stock |  |  |  | 386.0 |
Total consideration paid |  |  |  | 541.0 |
Goodwill |  |  |  | $ | 232.8 |
Explanation of fair value adjustments:
(1) | Write up of the book value of investments to their estimated fair values on the date of acquisition based upon quotes obtained from an independent third party pricing service.
(2) | Write down of the book value of loans to their estimated fair values. Shared National Credits (SNC) were recorded at quoted sales prices where available. The fair value of the remaining loans was estimated using cash flow projections based on the remaining maturity and repricing terms, adjusted for estimated future credit losses and prepayments and discounted to present value using a risk-adjusted market rate for similar loans. The fair value of collateral dependent loans acquired with deteriorated credit quality was estimated based on the Company's analysis of the fair value of each loan's underlying collateral, discounted using market-derived rates of return with consideration given to the period of time and costs associated with foreclosure and disposition of the collateral.
(3) | Adjustment to remove the Cascade allowance for loan losses at acquisition date, as the credit risk is included in the fair value adjustment for loans receivable described in (2) above.
(4) | Write up of the book value of premises and equipment to their estimated fair values on the date of acquisition based upon appraisals obtained from an independent third party appraiser or broker's opinion of value.
(5) | Adjustment represents the value of the core deposit base assumed in the acquisition based upon valuation from an independent accounting and advisory firm.
(6) | Adjustment consists of the write-off of pre-existing deferred tax assets and purchase accounting adjustments as a result of the acquisition.
(7) | Adjustment consists of various other assets recorded as a result of the acquisition, including mortgage servicing rights, SBA servicing rights, and favorable leases offset by reductions to the fair value of other items.
(8) | Decrease in book value of time deposits to their estimated fair values based upon interest rates of similar time deposits with similar terms on the date of acquisition based upon valuation from an independent accounting and advisory firm.
(9) | Increase in fair value due to credit card incentive program, unfavorable leases, write-off of balance sheet reserve, and swap liability offset.
Summary of Pre-tax Merger Related Expenses | These costs are incorporated in non-interest expenses in the Company’s consolidated statements of income.
Schedule of Acquired Loans with Credit Impairment | Information regarding loans acquired credit-impaired as of the May 30, 2017 acquisition date is as follows:
Contractually required principal and interest payments | $ | 49.7 |
Contractual cash flows not expected to be collected ("non-accretable discount") | 24.7 |
Cash flows expected to be collected | 25.0 |
Interest component of cash flows expected to be collected ("accretable discount") | 1.9 |
Fair value of acquired credit-impaired loans | $ | 23.1 |
The following table displays the outstanding unpaid balances and accrual status of loans acquired with credit impairment as of June 30, 2018 and 2017:
| As of June 30,
| 2018 |  | 2017
Outstanding balance | $ | 28.5 |  |  | $ | 60.2 |
Carrying value |  |  |
Loans on accrual status | 17.5 |  |  | 39.4 |
Total carrying value | $ | 17.5 |  |  | $ | 39.4 |
The following table summarizes changes in the accretable yield for loans acquired credit impaired for the three and six months ended June 30, 2018 and 2017:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 | 2017 |  | 2018 | 2017
Beginning balance | $ | 7.2 |  | $ | 6.4 |  |  | $ | 7.3 |  | $ | 6.8 |
Additions | 0.3 |  | 1.9 |  |  | 0.4 |  | 1.9 |
Accretion income | (0.9 | ) | (0.7 | ) |  | (1.7 | ) | (1.3 | )
Reductions due to exit events | (0.3 | ) | (0.4 | ) |  | (0.5 | ) | (1.0 | )
Reclassifications from nonaccretable differences | 0.2 |  | 0.4 |  |  | 1.0 |  | 1.2 |
Ending balance | $ | 6.5 |  | $ | 7.6 |  |  | $ | 6.5 |  | $ | 7.6 |
Schedule of Acquired Loans not Deemed to Have Credit Impairment | Information regarding acquired loans not deemed credit-impaired at the acquisition date is as follows:
Contractually required principal and interest payments | $ | 2,098.1 |
Contractual cash flows not expected to be collected due to projected prepayment | 23.3 |
Fair value at acquisition | $ | 2,066.5 |
Summary of Pro Forma Information | The following table presents unaudited pro forma consolidated revenues and net income as if the acquisition had occurred as of January 1, 2016.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 | 2017 |  | 2018 | 2017
Interest income | $ | 113.0 |  | $ | 103.3 |  |  | $ | 220.6 |  | $ | 203.3 |
Non-interest income | 37.7 |  | 41.3 |  |  | 72.9 |  | 77.9 |
Total revenues | $ | 150.7 |  | $ | 144.6 |  |  | $ | 293.5 |  | $ | 281.2 |
Net income | $ | 41.7 |  | $ | 29.4 |  |  | $ | 79.9 |  | $ | 58.7 |
EPS - basic | $ | 0.74 |  | $ | 0.50 |  |  | $ | 1.42 |  | $ | 1.02 |
EPS - diluted | 0.74 |  | 0.50 |  |  | 1.41 |  | 1.01 |

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