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Loans and Leases Receivable and Allowance for Loan and Lease Losses - Schedule of Accruing and Nonaccrual TDRs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 196	$ 473	$ 1,142	$ 1,458
Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded investment	0	0	431	0
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded investment	0	152	83	352
Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded investment	196	321	628	1,093
Other consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 0	$ 0	0	$ 13
Accruing TDRs
Financing Receivable, Impaired [Line Items]
Recorded investment			11,403		$ 11,624
Accruing TDRs | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded investment			61		64
Accruing TDRs | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment			16		32
Accruing TDRs | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded investment			2,964		3,026
Accruing TDRs | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded investment			8,362		8,502
Accruing TDRs | Other consumer
Financing Receivable, Impaired [Line Items]
Recorded investment			0		0
Nonaccrual TDRs
Financing Receivable, Impaired [Line Items]
Recorded investment			2,103		7,572
Nonaccrual TDRs | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded investment			29		5,273
Nonaccrual TDRs | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment			0		0
Nonaccrual TDRs | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded investment			639		667
Nonaccrual TDRs | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded investment			1,424		1,620
Nonaccrual TDRs | Other consumer
Financing Receivable, Impaired [Line Items]
Recorded investment			11		12
Total
Financing Receivable, Impaired [Line Items]
Recorded investment			13,506		19,196
Total | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded investment			90		5,337
Total | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment			16		32
Total | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded investment			3,603		3,693
Total | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded investment			9,786		10,122
Total | Other consumer
Financing Receivable, Impaired [Line Items]
Recorded investment			$ 11		$ 12

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Amount, after troubled debt restructuring, of modified financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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