v3.8.0.1

Loans - Composition of TDRs by Accrual and Nonaccrual Status (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Nonaccrual	$ 6,494	$ 8,238
Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Nonaccrual	5,216	3,359
Principal Reduction and Extended Maturity | Commercial and Industrial Loans
Accounts Notes And Loans Receivable [Line Items]
Troubled Debt Restructurings, Accrual	225	317
Troubled Debt Restructurings, Nonaccrual	2,522	3,109
Troubled Debt Restructurings, Total	$ 2,747	$ 3,426

X

- Definition

Financing receivable recorded investment accrual status.

+ References

No definition available.

+ Details

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Namespace Prefix:	ffwm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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X

- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Details

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X

- Details

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