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Loans Receivable and Allowance for Loan Losses - Schedule of Accruing and Nonaccrual TDRs (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 8,071,000	$ 6,616,000	$ 7,457,000
Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,437,000	76,000	791,000
Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,634,000	2,286,000	6,251,000
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	2,410,000	204,000
Accruing
Financing Receivable, Impaired [Line Items]
Recorded Investment	12,021	11,526	8,270
Accruing | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment	63	73	27
Accruing | Commercial real estate - owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	12	0
Accruing | Commercial real estate non-owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	0
Accruing | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment	8,130	7,429	5,911
Accruing | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,828	4,012	2,332
Nonaccruing
Financing Receivable, Impaired [Line Items]
Recorded Investment	8,408	4,870	3,172
Nonaccruing | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment	5,939	146	518
Nonaccruing | Commercial real estate - owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	0
Nonaccruing | Commercial real estate non-owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	1,945	204
Nonaccruing | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,766	2,072	2,389
Nonaccruing | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	703	707	61
Total
Financing Receivable, Impaired [Line Items]
Recorded Investment	20,429	16,396	11,442
Total | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,002	219	545
Total | Commercial real estate - owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	12	0
Total | Commercial real estate non-owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	1,945	204
Total | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment	9,896	9,501	8,300
Total | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 4,531	$ 4,719	$ 2,393

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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://www.xbrl.org/2003/role/presentationRef
-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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