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Loans - Credit Quality (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Loans by risk rating
Total Loans	$ 1,488,021	$ 1,478,809	$ 1,138,838
Multifamily
Loans by risk rating
Total Loans	92,140	96,502
Commercial
Loans by risk rating
Total Loans	233,922	228,113	120,460
Lease financing receivables
Loans by risk rating
Total Loans	64,607	55,451	30,647
Real estate - commercial
Loans by risk rating
Total Loans	713,358		598,943
Real estate - commercial | Owner occupied general purpose
Loans by risk rating
Total Loans	136,123	137,236
Real estate - commercial | Owner occupied special purpose
Loans by risk rating
Total Loans	173,022	178,140
Real estate - commercial | Non-owner occupied general purpose
Loans by risk rating
Total Loans	221,629	232,291
Real estate - commercial | Non-owner occupied special purpose
Loans by risk rating
Total Loans	121,661	119,065
Real estate - commercial | Retail properties
Loans by risk rating
Total Loans	46,345	54,653
Real estate - commercial | Farm
Loans by risk rating
Total Loans	14,578	14,862
Real estate - residential
Loans by risk rating
Total Loans	373,477		351,849
Real estate - residential | Investor
Loans by risk rating
Total Loans	60,846	56,097
Real estate - residential | Owner occupied
Loans by risk rating
Total Loans	119,624	123,626
Real estate - residential | Revolving and junior liens
Loans by risk rating
Total Loans	100,867	101,626
Consumer
Loans by risk rating
Total Loans	2,913	3,237	2,663
All other
Loans by risk rating
Total Loans	12,695	13,190	13,945
Pass
Loans by risk rating
Total Loans	1,433,476	1,430,321
Pass | Multifamily
Loans by risk rating
Total Loans	87,136	96,502
Pass | Commercial
Loans by risk rating
Total Loans	213,758	214,028
Pass | Lease financing receivables
Loans by risk rating
Total Loans	62,505	53,366
Pass | Real estate - commercial | Owner occupied general purpose
Loans by risk rating
Total Loans	132,769	135,503
Pass | Real estate - commercial | Owner occupied special purpose
Loans by risk rating
Total Loans	169,561	172,353
Pass | Real estate - commercial | Non-owner occupied general purpose
Loans by risk rating
Total Loans	219,883	229,448
Pass | Real estate - commercial | Non-owner occupied special purpose
Loans by risk rating
Total Loans	117,945	114,293
Pass | Real estate - commercial | Retail properties
Loans by risk rating
Total Loans	43,929	52,207
Pass | Real estate - commercial | Farm
Loans by risk rating
Total Loans	12,050	11,840
Pass | Real estate - residential | Investor
Loans by risk rating
Total Loans	59,938	55,001
Pass | Real estate - residential | Owner occupied
Loans by risk rating
Total Loans	113,133	115,831
Pass | Real estate - residential | Revolving and junior liens
Loans by risk rating
Total Loans	98,674	99,286
Pass | Consumer
Loans by risk rating
Total Loans	2,902	3,236
Pass | All other
Loans by risk rating
Total Loans	12,695	13,165
Special Mention
Loans by risk rating
Total Loans	32,798	22,004
Special Mention | Multifamily
Loans by risk rating
Total Loans	5,004
Special Mention | Commercial
Loans by risk rating
Total Loans	18,165	11,558
Special Mention | Lease financing receivables
Loans by risk rating
Total Loans	939	976
Special Mention | Real estate - commercial | Owner occupied general purpose
Loans by risk rating
Total Loans	1,910	53
Special Mention | Real estate - commercial | Owner occupied special purpose
Loans by risk rating
Total Loans	3,086	5,402
Special Mention | Real estate - commercial | Non-owner occupied general purpose
Loans by risk rating
Total Loans	658	913
Special Mention | Real estate - commercial | Retail properties
Loans by risk rating
Total Loans	1,255	1,267
Special Mention | Real estate - commercial | Farm
Loans by risk rating
Total Loans	1,213	1,240
Special Mention | Real estate - residential | Owner occupied
Loans by risk rating
Total Loans	568	570
Special Mention | All other
Loans by risk rating
Total Loans		25
Substandard
Loans by risk rating
Total Loans	21,747	26,484
Substandard | Commercial
Loans by risk rating
Total Loans	1,999	2,527
Substandard | Lease financing receivables
Loans by risk rating
Total Loans	1,163	1,109
Substandard | Real estate - commercial | Owner occupied general purpose
Loans by risk rating
Total Loans	1,444	1,680
Substandard | Real estate - commercial | Owner occupied special purpose
Loans by risk rating
Total Loans	375	385
Substandard | Real estate - commercial | Non-owner occupied general purpose
Loans by risk rating
Total Loans	1,088	1,930
Substandard | Real estate - commercial | Non-owner occupied special purpose
Loans by risk rating
Total Loans	3,716	4,772
Substandard | Real estate - commercial | Retail properties
Loans by risk rating
Total Loans	1,161	1,179
Substandard | Real estate - commercial | Farm
Loans by risk rating
Total Loans	1,315	1,782
Substandard | Real estate - residential | Investor
Loans by risk rating
Total Loans	908	1,096
Substandard | Real estate - residential | Owner occupied
Loans by risk rating
Total Loans	5,923	7,225
Substandard | Real estate - residential | Revolving and junior liens
Loans by risk rating
Total Loans	2,193	2,340
Substandard | Consumer
Loans by risk rating
Total Loans	11	1
Construction Loans | Real estate - commercial
Loans by risk rating
Total Loans	87,049		$ 20,331
Construction Loans | Real estate - commercial | Homebuilder
Loans by risk rating
Total Loans	3,226	3,883
Construction Loans | Real estate - commercial | Land
Loans by risk rating
Total Loans	2,900	3,029
Construction Loans | Real estate - commercial | Commercial speculative
Loans by risk rating
Total Loans	27,131	22,728
Construction Loans | Real estate - commercial | All other
Loans by risk rating
Total Loans	53,792	35,080
Construction Loans | Pass | Real estate - commercial | Homebuilder
Loans by risk rating
Total Loans	3,226	3,883
Construction Loans | Pass | Real estate - commercial | Land
Loans by risk rating
Total Loans	2,900	3,029
Construction Loans | Pass | Real estate - commercial | Commercial speculative
Loans by risk rating
Total Loans	27,061	22,654
Construction Loans | Pass | Real estate - commercial | All other
Loans by risk rating
Total Loans	53,411	34,696
Construction Loans | Substandard | Real estate - commercial | Commercial speculative
Loans by risk rating
Total Loans	70	74
Construction Loans | Substandard | Real estate - commercial | All other
Loans by risk rating
Total Loans	$ 381	$ 384

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524

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