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Industry Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Fee revenue and other income: |  |  |  |  |  |  |  |  |  |  |
Income from customers |  |  |  |  |  |  |  |  | $ 83,368 | $ 79,907 | $ 76,572
Intersegment income (expense) |  |  |  |  |  |  |  |  |  |  |
Net interest income (expense) after provision for loan losses: |  |  |  |  |  |  |  |  |  |  |
Income from customers |  |  |  |  |  |  |  |  | $ 37,449 | $ 37,299 | $ 38,245
Intersegment income (expense) |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | $ 3,416 | $ 3,096 | $ 2,896
Income tax expense | $ 2,017 | $ 2,083 | $ 1,932 | $ 1,946 | $ 1,902 | $ 2,013 | $ 1,958 | $ 1,886 | 7,978 | 7,759 | 7,234
Net income | 6,089 | $ 5,880 | $ 5,548 | $ 5,539 | 5,786 | $ 6,401 | $ 6,035 | $ 5,811 | 23,056 | 24,033 | 23,497
Goodwill | 11,590 |  |  |  | 11,590 |  |  |  | 11,590 | 11,590 | 11,590
Other intangible assets, net | 2,405 |  |  |  | 2,762 |  |  |  | 2,405 | 2,762 | 3,222
Total assets | 1,455,506 |  |  |  | 1,500,731 |  |  |  | 1,455,506 | 1,500,731 | 1,326,020
Information Services [Member] |  |  |  |  |  |  |  |  |  |  |
Fee revenue and other income: |  |  |  |  |  |  |  |  |  |  |
Income from customers |  |  |  |  |  |  |  |  | 82,144 | 78,773 | 75,010
Intersegment income (expense) |  |  |  |  |  |  |  |  | 10,078 | 9,210 | 9,637
Net interest income (expense) after provision for loan losses: |  |  |  |  |  |  |  |  |  |  |
Income from customers |  |  |  |  |  |  |  |  | 14,598 | 15,678 | 15,986
Intersegment income (expense) |  |  |  |  |  |  |  |  | 12 | 12 | 11
Depreciation and amortization |  |  |  |  |  |  |  |  | 3,164 | 2,795 | 2,638
Income tax expense |  |  |  |  |  |  |  |  | 2,818 | 3,006 | 2,232
Net income |  |  |  |  |  |  |  |  | 14,635 | 16,379 | 15,237
Goodwill | 11,454 |  |  |  | 11,454 |  |  |  | 11,454 | 11,454 | 11,454
Other intangible assets, net | 2,405 |  |  |  | 2,762 |  |  |  | 2,405 | 2,762 | 3,222
Total assets | 702,491 |  |  |  | 782,844 |  |  |  | 702,491 | 782,844 | 657,604
Banking Services [Member] |  |  |  |  |  |  |  |  |  |  |
Fee revenue and other income: |  |  |  |  |  |  |  |  |  |  |
Income from customers |  |  |  |  |  |  |  |  | 1,224 | 1,134 | 1,216
Intersegment income (expense) |  |  |  |  |  |  |  |  | 1,648 | 1,504 | 1,479
Net interest income (expense) after provision for loan losses: |  |  |  |  |  |  |  |  |  |  |
Income from customers |  |  |  |  |  |  |  |  | 22,851 | 21,621 | 22,259
Intersegment income (expense) |  |  |  |  |  |  |  |  | (12) | (12) | (11)
Depreciation and amortization |  |  |  |  |  |  |  |  | 151 | 182 | 143
Income tax expense |  |  |  |  |  |  |  |  | 5,160 | 4,753 | 5,002
Net income |  |  |  |  |  |  |  |  | 8,421 | 7,654 | 8,133
Goodwill | $ 136 |  |  |  | $ 136 |  |  |  | $ 136 | $ 136 | $ 136
Other intangible assets, net |  |  |  |  |  |  |  |  |  |  |
Total assets | $ 761,739 |  |  |  | $ 755,400 |  |  |  | $ 761,739 | $ 755,400 | $ 679,357
Corporate Eliminations and Other [Member] |  |  |  |  |  |  |  |  |  |  |
Fee revenue and other income: |  |  |  |  |  |  |  |  |  |  |
Income from customers |  |  |  |  |  |  |  |  |  |  | 346
Intersegment income (expense) |  |  |  |  |  |  |  |  | $ (11,726) | $ (10,714) | $ (11,116)
Net interest income (expense) after provision for loan losses: |  |  |  |  |  |  |  |  |  |  |
Income from customers |  |  |  |  |  |  |  |  |  |  |
Intersegment income (expense) |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | $ 101 | $ 119 | $ 115
Income tax expense |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  |  | $ 127
Goodwill |  |  |  |  |  |  |  |  |  |  |
Other intangible assets, net |  |  |  |  |  |  |  |  |  |  |
Total assets | $ (8,724) |  |  |  | $ (37,513) |  |  |  | $ (8,724) | $ (37,513) | $ (10,941)

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