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Loans and Allowance for Loan Losses - Impaired Loans and Related Allowance (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Recorded investment in impaired loans: |  |  |
With no specific allowance recorded | $ 5,442,000 |  | $ 4,209,000
With a specific allowance recorded | 13,013,000 |  | 14,104,000
Total recorded investment in impaired loans | 18,455,000 |  | 18,313,000
Unpaid principal balance of impaired loans: |  |  |
Total unpaid principal balance of impaired loans | 18,436,000 |  | 18,270,000
Specific valuation | 673,000 |  | 991,000
Average recorded investment in impaired loans during the period | 18,384,000 | $ 21,754,000 |
Interest income recognized on impaired loans during the period ended | 183,000 | 217,000 |
Interest income recognized on impaired loans during the period ended, cash basis |  | 0 |
Outstanding commitments to extend credit on impaired loans | 1,300,000 |  | 1,600,000
Commercial loans | Commercial and industrial |  |  |
Recorded investment in impaired loans: |  |  |
With no specific allowance recorded | 314,000 |  | 315,000
With a specific allowance recorded | 1,756,000 |  | 1,892,000
Total recorded investment in impaired loans | 2,070,000 |  | 2,207,000
Unpaid principal balance of impaired loans: |  |  |
Total unpaid principal balance of impaired loans | 2,054,000 |  | 2,177,000
Specific valuation | 28,000 |  | 285,000
Average recorded investment in impaired loans during the period | 2,138,000 | 4,283,000 |
Interest income recognized on impaired loans during the period ended | 23,000 | 57,000 |
Commercial real estate loans | Commercial real estate, owner-occupied |  |  |
Recorded investment in impaired loans: |  |  |
With no specific allowance recorded | 0 |  | 0
With a specific allowance recorded | 7,001,000 |  | 6,993,000
Total recorded investment in impaired loans | 7,001,000 |  | 6,993,000
Unpaid principal balance of impaired loans: |  |  |
Total unpaid principal balance of impaired loans | 6,993,000 |  | 6,993,000
Specific valuation | 157,000 |  | 163,000
Average recorded investment in impaired loans during the period | 6,997,000 | 6,993,000 |
Interest income recognized on impaired loans during the period ended | 66,000 | 66,000 |
Commercial real estate loans | Commercial real estate, investor |  |  |
Recorded investment in impaired loans: |  |  |
With no specific allowance recorded | 1,076,000 |  | 0
With a specific allowance recorded | 2,235,000 |  | 2,256,000
Total recorded investment in impaired loans | 3,311,000 |  | 2,256,000
Unpaid principal balance of impaired loans: |  |  |
Total unpaid principal balance of impaired loans | 3,323,000 |  | 2,252,000
Specific valuation | 374,000 |  | 375,000
Average recorded investment in impaired loans during the period | 2,783,000 | 3,129,000 |
Interest income recognized on impaired loans during the period ended | 23,000 | 16,000 |
Commercial real estate loans | Construction |  |  |
Recorded investment in impaired loans: |  |  |
With no specific allowance recorded | 2,690,000 |  | 2,692,000
With a specific allowance recorded | 551,000 |  | 553,000
Total recorded investment in impaired loans | 3,241,000 |  | 3,245,000
Unpaid principal balance of impaired loans: |  |  |
Total unpaid principal balance of impaired loans | 3,238,000 |  | 3,238,000
Specific valuation | 6,000 |  | 8,000
Average recorded investment in impaired loans during the period | 3,243,000 | 3,238,000 |
Interest income recognized on impaired loans during the period ended | 34,000 | 38,000 |
Residential loans | Home equity |  |  |
Recorded investment in impaired loans: |  |  |
With no specific allowance recorded | 88,000 |  | 91,000
With a specific allowance recorded | 623,000 |  | 624,000
Total recorded investment in impaired loans | 711,000 |  | 715,000
Unpaid principal balance of impaired loans: |  |  |
Total unpaid principal balance of impaired loans | 708,000 |  | 713,000
Specific valuation | 10,000 |  | 7,000
Average recorded investment in impaired loans during the period | 713,000 | 868,000 |
Interest income recognized on impaired loans during the period ended | 8,000 | 4,000 |
Residential loans | Other residential |  |  |
Recorded investment in impaired loans: |  |  |
With no specific allowance recorded | 1,175,000 |  | 1,008,000
With a specific allowance recorded | 0 |  | 957,000
Total recorded investment in impaired loans | 1,175,000 |  | 1,965,000
Unpaid principal balance of impaired loans: |  |  |
Total unpaid principal balance of impaired loans | 1,174,000 |  | 1,965,000
Specific valuation | 0 |  | 55,000
Average recorded investment in impaired loans during the period | 1,571,000 | 2,004,000 |
Interest income recognized on impaired loans during the period ended | 19,000 | 23,000 |
Consumer loans | Installment and other consumer |  |  |
Recorded investment in impaired loans: |  |  |
With no specific allowance recorded | 99,000 |  | 103,000
With a specific allowance recorded | 847,000 |  | 829,000
Total recorded investment in impaired loans | 946,000 |  | 932,000
Unpaid principal balance of impaired loans: |  |  |
Total unpaid principal balance of impaired loans | 946,000 |  | 932,000
Specific valuation | 98,000 |  | $ 98,000
Average recorded investment in impaired loans during the period | 939,000 | 1,239,000 |
Interest income recognized on impaired loans during the period ended | $ 10,000 | $ 13,000 |

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