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Other Intangible Assets Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Gross Carrying Amount |  |  |  |  |  | $ 8,597 | $ 8,451
Accumulated Amortization |  |  |  |  |  | (5,901) | (5,344)
Net Carrying Amount |  | $ 3,107 |  | $ 3,625 | $ 4,140 | 2,696 | 3,107
Finite-lived Intangible Assets [Roll Forward] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Beginning Balance |  | 3,107 |  | 3,625 | 4,140 |  |
Intangible Assets Acquired |  | 146 |  | 107 | 133 |  |
Impairment of Intangible Assets, Finite-lived |  | 0 |  | 38 |  |  |
Amortization of Intangible Assets |  | (557) |  | (587) | (648) |  |
Finite-Lived Intangible Assets, Ending Balance |  | 2,696 |  | 3,107 | 3,625 |  |
Depositor Intangibles [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Gross Carrying Amount | [1] |  |  |  |  | 2,247 | 2,247
Accumulated Amortization | [1] |  |  |  |  | (2,247) | (2,247)
Net Carrying Amount | [1] | 0 |  | 10 | 61 | 0 | 0
Finite-lived Intangible Assets [Roll Forward] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Beginning Balance | [1] | 0 |  | 10 | 61 |  |
Intangible Assets Acquired | [1] | 0 |  | 0 | 0 |  |
Impairment of Intangible Assets, Finite-lived |  | 0 |  | 0 |  |  |
Amortization of Intangible Assets | [1] | 0 |  | (10) | (51) |  |
Finite-Lived Intangible Assets, Ending Balance | [1] | 0 |  | 0 | 10 |  |
Mortgage Servicing Rights [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Gross Carrying Amount | [2] |  |  |  |  | 1,968 | 1,822
Accumulated Amortization | [2] |  |  |  |  | (1,403) | (1,143)
Net Carrying Amount | [2] | 679 |  | 832 | 960 | 565 | 679
Finite-lived Intangible Assets [Roll Forward] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Beginning Balance | [2] | 679 |  | 832 | 960 |  |
Intangible Assets Acquired | [2] | 146 |  | 107 | 133 |  |
Impairment of Intangible Assets, Finite-lived |  | 0 | [2] | 0 |  |  |
Amortization of Intangible Assets | [2] | (260) |  | (260) | (261) |  |
Finite-Lived Intangible Assets, Ending Balance | [2] | 565 |  | 679 | 832 |  |
Customer Intangibles [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Gross Carrying Amount | [1] |  |  |  |  | 4,382 | 4,382
Accumulated Amortization | [1] |  |  |  |  | (2,251) | (1,954)
Net Carrying Amount | [1] | 2,428 |  | 2,783 | 3,119 | $ 2,131 | $ 2,428
Finite-lived Intangible Assets [Roll Forward] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Beginning Balance | [1] | 2,428 |  | 2,783 | 3,119 |  |
Intangible Assets Acquired | [1] | 0 |  | 0 | 0 |  |
Impairment of Intangible Assets, Finite-lived |  | 0 | [1] | 38 |  |  |
Amortization of Intangible Assets | [1] | (297) |  | (317) | (336) |  |
Finite-Lived Intangible Assets, Ending Balance | [1] | $ 2,131 |  | $ 2,428 | $ 2,783 |  |
[1] | Amortization of depositor intangibles and customer intangibles are reported in the consolidated statements of income as a component of other operating expense.
[2] | Amortization of mortgage servicing rights is reported in the consolidated statements of income as a reduction of mortgage servicing fee income, which is included with fees for other services to customers.

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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