Revenue Recognition (Notes)	6 Months Ended
Jun. 30, 2018
Revenue Recognition [Abstract]
Revenue Recognition, Deferred Revenue [Policy Text Block]	Revenue Recognition On January 1, 2018, the Company adopted ASU 2014-09 et al. As stated in Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 1: Basis of Presentation and Summary of Significant Accounting Policies,” the implementation of the new standard did not have a material impact on the measurement or recognition of revenue; as such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, Revenue from Contracts with Customers (“ASC 606”), while prior period amounts were not adjusted and continue to be reported in accordance with our historic accounting under ASC 605, Revenue Recognition. ASC 606 does not apply to revenue associated with financial instruments, including interest income on loans and investment securities. In addition, certain noninterest income such as fees associated with mortgage servicing rights, late fees, BOLI income, and derivatives are also not in scope of the new guidance. ASC 606 is applicable to noninterest income such as investment management fees, wealth advisory fees, wealth management and trust fees, and certain banking fees. However, the recognition of this revenue did not change upon adoption of ASC 606. Substantially all of the Company’s revenue is generated from contracts with customers. Noninterest income considered in-scope of ASC 606 is discussed below. Investment management fees Investment management fees are earned for the management of a series of accounts and funds in which clients invest directly, acting as a sub-advisor to larger investment management companies, or private client account management. The Company’s performance obligation is satisfied over time and the resulting fees are recognized monthly, based upon either the beginning-of quarter (in advance) or quarter-end (in arrears) market value of the assets under management and the applicable fee rate, depending on the terms of the contract. Payment is generally received a few days after month end through a direct charge to customers’ accounts. The Company may earn performance-based incentives on certain contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. All of the investment management fee income on the consolidated statement of operations for the three and six months ended June 30, 2018 and 2017 is considered in-scope of ASC 606. Wealth advisory fees Wealth advisory fees are earned for providing financial advisory services to clients. The Company’s performance obligation under these contracts is satisfied over time as the financial advisory services are provided. Fees are recognized monthly based either on a fixed fee amount or are based on the quarter-end (in arrears) market value of the assets under management and the applicable fee rate (“asset based fees”), depending on the terms of the contract. Payment on fixed fee contracts is received based on a schedule outlined in the contract, while payment on asset based fees are generally received a few days after quarter end through a direct charge to customers’ accounts. No performance based incentives are earned on wealth advisory contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. Deferred revenues related to the fixed fee contracts of $6.7 million and $6.6 million at June 30, 2018 and December 31, 2017, respectively, are recorded on the consolidated balance sheet within the other liabilities line item. All of the wealth advisory fee income on the consolidated statement of operations for the three and six months ended June 30, 2018 and 2017 is considered in-scope of ASC 606. Wealth management and trust fees Wealth management and trust fees are earned for providing investment management, wealth management, retirement plan advisory, family office, financial planning, and trust services to clients. The Company’s performance obligation under these contracts is satisfied over time as the wealth management services are provided. Fees are recognized monthly based on the average monthly, beginning-of-quarter, or, for a small number of clients, end-of-quarter market value of the assets under management and the applicable fee rate, depending on the terms of the contract. No performance based incentives are earned on wealth management contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. Trust fees are earned when the Company is appointed as trustee for clients. As trustee, the Company administers the client’s trust and manages the assets of the trust including investments and property. The Company’s performance obligation under these agreements is satisfied over time as the administration and management services are provided. Fees are recognized monthly based on a percentage of the market value of the account as outlined in the agreement. Payment frequency is defined in the individual contracts which primarily stipulate monthly in arrears. No performance based incentives are earned on trust fee contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. All of the wealth management and trust fee income on the consolidated statement of operations for the three and six months ended June 30, 2018 and 2017 is considered in-scope of ASC 606. Other banking fee income The Bank charges a variety of fees to its clients for services provided on the deposit and deposit management related accounts. Each fee is either transaction-based or assessed monthly. The types of fees include service charges on accounts, overdraft fees, maintenance fees, ATM fee charges, credit card charges, and other miscellaneous charges related to the accounts. These fees are not governed by individual contracts with clients. They are charges to clients based on disclosures presented to clients upon opening these accounts along with updated disclosures when changes are made to the fee structures. The transaction-based fees are recognized in revenue when charged to the client based on specific activity on the client’s account. Monthly service/maintenance charges are recognized in the month they are earned and are charged directly to the client’s account. The Bank also charges fees for treasury activities such as foreign exchange fees for clients with a banking relationship. These fees are recorded when earned via completion of the transaction for the client. The completion of the transaction is deemed to be the performance obligation of the transaction. The related revenue is recorded through a direct charge to the client’s account. There are no individual agreements or contracts with clients as it relates to foreign exchange fees as they are governed by client disclosure statements and the Bank’s internal policies and procedures. For the three months ended June 30, 2018 and 2017, $1.1 million and $0.9 million, respectively, of other banking fee income as described above is considered in-scope for ASC 606. For the six months ended June 30, 2018 and 2017, $2.0 million and $1.8 million, respectively, of other banking fee income as described above is considered in-scope for ASC 606.

Revenue Recognition

On January 1, 2018, the Company adopted ASU 2014-09 et al. As stated in Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 1: Basis of Presentation and Summary of Significant Accounting Policies,” the implementation of the new standard did not have a material impact on the measurement or recognition of revenue; as such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, Revenue from Contracts with Customers (“ASC 606”), while prior period amounts were not adjusted and continue to be reported in accordance with our historic accounting under ASC 605, Revenue Recognition.

ASC 606 does not apply to revenue associated with financial instruments, including interest income on loans and investment securities. In addition, certain noninterest income such as fees associated with mortgage servicing rights, late fees, BOLI income, and derivatives are also not in scope of the new guidance. ASC 606 is applicable to noninterest income such as investment management fees, wealth advisory fees, wealth management and trust fees, and certain banking fees. However, the recognition of this revenue did not change upon adoption of ASC 606. Substantially all of the Company’s revenue is generated from contracts with customers. Noninterest income considered in-scope of ASC 606 is discussed below.

Investment management fees

Investment management fees are earned for the management of a series of accounts and funds in which clients invest directly, acting as a sub-advisor to larger investment management companies, or private client account management. The Company’s performance obligation is satisfied over time and the resulting fees are recognized monthly, based upon either the beginning-of quarter (in advance) or quarter-end (in arrears) market value of the assets under management and the applicable fee rate, depending on the terms of the contract. Payment is generally received a few days after month end through a direct charge to customers’ accounts. The Company may earn performance-based incentives on certain contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item.

All of the investment management fee income on the consolidated statement of operations for the three and six months ended June 30, 2018 and 2017 is considered in-scope of ASC 606.

Wealth advisory fees

Wealth advisory fees are earned for providing financial advisory services to clients. The Company’s performance obligation under these contracts is satisfied over time as the financial advisory services are provided. Fees are recognized monthly based either on a fixed fee amount or are based on the quarter-end (in arrears) market value of the assets under management and the applicable fee rate (“asset based fees”), depending on the terms of the contract. Payment on fixed fee contracts is received based on a schedule outlined in the contract, while payment on asset based fees are generally received a few days after quarter end through a direct charge to customers’ accounts. No performance based incentives are earned on wealth advisory contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. Deferred revenues related to the fixed fee contracts of $6.7 million and $6.6 million at June 30, 2018 and December 31, 2017, respectively, are recorded on the consolidated balance sheet within the other liabilities line item.

All of the wealth advisory fee income on the consolidated statement of operations for the three and six months ended June 30, 2018 and 2017 is considered in-scope of ASC 606.

Wealth management and trust fees

Wealth management and trust fees are earned for providing investment management, wealth management, retirement plan advisory, family office, financial planning, and trust services to clients. The Company’s performance obligation under these contracts is satisfied over time as the wealth management services are provided. Fees are recognized monthly based on the average monthly, beginning-of-quarter, or, for a small number of clients, end-of-quarter market value of the assets under management and the applicable fee rate, depending on the terms of the contract. No performance based incentives are earned on wealth management contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item.

Trust fees are earned when the Company is appointed as trustee for clients. As trustee, the Company administers the client’s trust and manages the assets of the trust including investments and property. The Company’s performance obligation under these agreements is satisfied over time as the administration and management services are provided. Fees are recognized monthly based on a percentage of the market value of the account as outlined in the agreement. Payment frequency is defined in the individual contracts which primarily stipulate monthly in arrears. No performance based incentives are earned on trust fee contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item.

All of the wealth management and trust fee income on the consolidated statement of operations for the three and six months ended June 30, 2018 and 2017 is considered in-scope of ASC 606.

Other banking fee income

The Bank charges a variety of fees to its clients for services provided on the deposit and deposit management related accounts. Each fee is either transaction-based or assessed monthly. The types of fees include service charges on accounts, overdraft fees, maintenance fees, ATM fee charges, credit card charges, and other miscellaneous charges related to the accounts. These fees are not governed by individual contracts with clients. They are charges to clients based on disclosures presented to clients upon opening these accounts along with updated disclosures when changes are made to the fee structures. The transaction-based fees are recognized in revenue when charged to the client based on specific activity on the client’s account. Monthly service/maintenance charges are recognized in the month they are earned and are charged directly to the client’s account.

The Bank also charges fees for treasury activities such as foreign exchange fees for clients with a banking relationship. These fees are recorded when earned via completion of the transaction for the client. The completion of the transaction is deemed to be the performance obligation of the transaction. The related revenue is recorded through a direct charge to the client’s account. There are no individual agreements or contracts with clients as it relates to foreign exchange fees as they are governed by client disclosure statements and the Bank’s internal policies and procedures.

For the three months ended June 30, 2018 and 2017, $1.1 million and $0.9 million, respectively, of other banking fee income as described above is considered in-scope for ASC 606. For the six months ended June 30, 2018 and 2017, $2.0 million and $1.8 million, respectively, of other banking fee income as described above is considered in-scope for ASC 606.