Loans and Allowance for Credit Losses on Loans - Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Aged analysis of past due loans
Total Past Due	$ 32,716
Current	1,924,488
Total Past Due Including PCI loans		$ 17,196
Current including PCI Loans		1,898,221
Non accrual including PCI Loans	19,497	15,395
Total loans, excluding PCI loans	1,957,204	1,922,211
PCI loans	1,957,204	1,930,812
Total loans, including deferred loan loan costs and PCI	1,957,204	1,930,812
Recorded Investment 90 days or Greater Past Due and Accruing	1,406	2,628
Total Loans	1,957,204
30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	17,951
Total Past Due Including PCI loans		9,379
60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	3,020
Total Past Due Including PCI loans		5,272
90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	11,745
Total Past Due Including PCI loans		2,545
PCI
Aged analysis of past due loans
Total Past Due		261
Current		5,377
Nonaccrual		2,963
PCI loans		8,601
PCI \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		261
Non-PCI
Aged analysis of past due loans
Total Past Due		16,935
Current		1,892,844
Nonaccrual	19,497	12,432
Total loans, excluding PCI loans		1,922,211
Recorded Investment 90 days or Greater Past Due and Accruing		2,628
Non-PCI \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		9,118
Non-PCI \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		5,272
Non-PCI \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due		2,545
Commercial
Aged analysis of past due loans
Total Past Due	3,357	4,299
Current	361,269	328,399
Nonaccrual	2,418	144
Total loans, excluding PCI loans		332,842
Total loans, including deferred loan loan costs and PCI	364,626
Recorded Investment 90 days or Greater Past Due and Accruing		2,132
Total Loans	364,626
Commercial \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	1,032	1,271
Commercial \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	46	925
Commercial \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	2,279	2,103
Leases
Aged analysis of past due loans
Total Past Due	799	443
Current	125,438	118,979
Nonaccrual	187	329
Total loans, excluding PCI loans		119,751
Total loans, including deferred loan loan costs and PCI	126,237
Recorded Investment 90 days or Greater Past Due and Accruing		128
Total Loans	126,237
Leases \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	613	362
Leases \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	63
Leases \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	123	81
Commercial real estate - Investor
Aged analysis of past due loans
Total Past Due	3,657	1,064
Current	500,248	517,336
Nonaccrual	1,750	1,695
Total loans, excluding PCI loans		520,095
Total loans, including deferred loan loan costs and PCI	503,905
Recorded Investment 90 days or Greater Past Due and Accruing	59	348
Total Loans	503,905
Commercial real estate - Investor \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	2,235	626
Commercial real estate - Investor \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		95
Commercial real estate - Investor \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	1,422	343
Commercial real estate - Owner occupied
Aged analysis of past due loans
Total Past Due		3,495
Current		336,829
Nonaccrual	7,436	5,180
Total loans, excluding PCI loans		345,504
Total loans, including deferred loan loan costs and PCI	349,595
Commercial real estate - Owner occupied \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		2,469
Commercial real estate - Owner occupied \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		1,026
Real estate - construction
Aged analysis of past due loans
Total Past Due		26
Current		69,498
Nonaccrual	2,245	93
Total loans, excluding PCI loans		69,617
Real estate - construction \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		26
Real estate - construction \| Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Aged analysis of past due loans
Total Past Due	1,230
Current	76,929
Recorded Investment 90 days or Greater Past Due and Accruing	555
Total Loans	78,159
Real estate - construction \| Commercial Real Estate Owner Occupied Special Purpose Loan [Member] \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	675
Real estate - construction \| Commercial Real Estate Owner Occupied Special Purpose Loan [Member] \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	555
Real estate - Investor
Aged analysis of past due loans
Total Past Due		266
Current		70,051
Nonaccrual	859	788
Total loans, excluding PCI loans		71,105
Total loans, including deferred loan loan costs and PCI	69,429
Real estate - Investor \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		141
Real estate - Investor \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		125
Real estate - Investor \| Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Aged analysis of past due loans
Total Past Due	1,087
Current	68,342
Total Loans	69,429
Real estate - Investor \| Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member] \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	291
Real estate - Investor \| Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member] \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	100
Real estate - Investor \| Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member] \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	696
Real estate - Owner occupied
Aged analysis of past due loans
Total Past Due		4,801
Current		128,650
Nonaccrual	3,406	2,572
Total loans, excluding PCI loans		136,023
Total loans, including deferred loan loan costs and PCI	129,982
Real estate - Owner occupied \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		3,450
Real estate - Owner occupied \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		1,351
Real estate - Owner occupied \| Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member]
Aged analysis of past due loans
Total Past Due	6,489
Current	123,493
Recorded Investment 90 days or Greater Past Due and Accruing	736
Total Loans	129,982
Real estate - Owner occupied \| Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member] \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	4,183
Real estate - Owner occupied \| Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member] \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	167
Real estate - Owner occupied \| Commercial Real Estate, Non Owner Occupied Special Purpose Loan [Member] \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	2,139
Real estate - commercial \| Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Aged analysis of past due loans
Total Past Due	11,202
Current	338,393
Total Loans	349,595
Real estate - commercial \| Commercial Real Estate, Owner Occupied General Purpose Loan [Member] \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	5,062
Real estate - commercial \| Commercial Real Estate, Owner Occupied General Purpose Loan [Member] \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	2,080
Real estate - commercial \| Commercial Real Estate, Owner Occupied General Purpose Loan [Member] \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	4,060
Real estate - commercial \| Real estate - construction \| Construction Real Estate, Homebuilder Loan [Member]
Aged analysis of past due loans
Total Past Due	548
Current	15,381
Total Loans	15,929
Real estate - commercial \| Real estate - construction \| Construction Real Estate, Homebuilder Loan [Member] \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	537
Real estate - commercial \| Real estate - construction \| Construction Real Estate, Homebuilder Loan [Member] \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	3
Real estate - commercial \| Real estate - construction \| Construction Real Estate, Homebuilder Loan [Member] \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	8
Multifamily
Aged analysis of past due loans
Total Past Due		1,710
Current		187,995
Nonaccrual	69	68
Total loans, excluding PCI loans		189,773
Multifamily \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		10
Multifamily \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		1,700
Multifamily \| Commercial Real Estate, Retail Properties Loan [Member]
Aged analysis of past due loans
Total Past Due	2,445
Current	192,852
Total Loans	195,297
Multifamily \| Commercial Real Estate, Retail Properties Loan [Member] \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	1,815
Multifamily \| Commercial Real Estate, Retail Properties Loan [Member] \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due	561
Multifamily \| Commercial Real Estate, Retail Properties Loan [Member] \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	69
Multifamily \| Real estate - construction
Aged analysis of past due loans
Total loans, including deferred loan loan costs and PCI	195,297
HELOC
Aged analysis of past due loans
Total Past Due	1,788	803
Current	91,377	89,438
Nonaccrual	1,004	1,364
Total loans, excluding PCI loans		91,605
Total loans, including deferred loan loan costs and PCI	93,165
Recorded Investment 90 days or Greater Past Due and Accruing	56	20
Total Loans	93,165
HELOC \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	1,459	735
HELOC \| 60 to 89 Days Past Due
Aged analysis of past due loans
Total Past Due		50
HELOC \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	329	18
HELOC - Purchased
Aged analysis of past due loans
Total Past Due	114
Current	30,766	31,672
Nonaccrual	114	180
Total loans, excluding PCI loans		31,852
Total loans, including deferred loan loan costs and PCI	30,880
Total Loans	30,880
HELOC - Purchased \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due	49
HELOC - Purchased \| 90 Days or Greater Past Due
Aged analysis of past due loans
Total Past Due	65
Other
Aged analysis of past due loans
Total Past Due		28
Current		13,997
Nonaccrual	$ 9	19
Total loans, excluding PCI loans		14,044
Other \| 30 to 59 Days Past Due
Aged analysis of past due loans
Total Past Due		$ 28

Amount of financing receivable on nonaccrual status including purchased credit impaired loans.

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Amount of financing receivable not past due including purchased credit impaired loans.

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Amount of financing receivable past due including purchased credit impaired loans.

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Amount, excluding PCI loans, 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.

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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 and purchased credit impaired loans. Excludes loans and leases covered under loss sharing agreements.

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Amount, after fee received for commitment to originate or purchase, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

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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.

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