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Loans Receivable and Allowance for Loan Losses - Schedule of Accruing and Nonaccrual TDRs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 473	$ 182	$ 1,458	$ 7,560
Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment			0	6,203
Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment	321	182	1,093	1,357
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 152	$ 0	352	0
Other
Financing Receivable, Impaired [Line Items]
Recorded Investment			13	$ 0
Accruing
Financing Receivable, Impaired [Line Items]
Recorded Investment			11,619		$ 12,021
Accruing | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment			66		63
Accruing | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment			37		0
Accruing | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment			8,457		8,130
Accruing | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment			3,059		3,828
Accruing | Other
Financing Receivable, Impaired [Line Items]
Recorded Investment			0		0
Nonaccruing
Financing Receivable, Impaired [Line Items]
Recorded Investment			7,803		8,408
Nonaccruing | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment			5,311		5,939
Nonaccruing | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment			0		0
Nonaccruing | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment			1,781		1,766
Nonaccruing | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment			698		703
Nonaccruing | Other
Financing Receivable, Impaired [Line Items]
Recorded Investment			13		0
Total
Financing Receivable, Impaired [Line Items]
Recorded Investment			19,422		20,429
Total | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment			5,377		6,002
Total | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment			37		0
Total | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment			10,238		9,896
Total | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment			3,757		4,531
Total | Other
Financing Receivable, Impaired [Line Items]
Recorded Investment			$ 13		$ 0

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- Definition

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+ References

No definition available.

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- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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