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Amortizable Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Amortizable Intangible Assets | Amortizable intangible assets at December 31, 2017 and 2016 consisted of the following:
| December 31, 2017 |  | December 31, 2016
(in thousands) | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Value |  | Weighted Average Life in Years(1) |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Value |  | Weighted Average Life in Years(1)
Purchased customer accounts | $ | 1,464,274 |  |  | $ | (824,584 | ) |  | $ | 639,690 |  |  | 15.0 |  | $ | 1,447,680 |  |  | $ | (741,770 | ) |  | $ | 705,910 |  |  | 15.0
Non-compete agreements | 30,287 |  |  | (28,972 | ) |  | 1,315 |  |  | 6.8 |  | 29,668 |  |  | (28,124 | ) |  | 1,544 |  |  | 6.8
Total | $ | 1,494,561 |  |  | $ | (853,556 | ) |  | $ | 641,005 |  |  |  |  | $ | 1,477,348 |  |  | $ | (769,894 | ) |  | $ | 707,454 |  |  |
(1) Weighted-average life calculated as of the date of acquisition.

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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