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Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 132,410 | $ 132,410 | $ 100,212
Goodwill, Acquired During Period | 0 | 32,198 |
Finite-Lived Intangible Assets, Gross | 25,900 | 25,900 |
Finite-Lived Intangible Assets, Accumulated Amortization | 11,406 | 8,878 |
Finite-Lived Intangible Assets, Net | 14,494 | 17,022 |
Finite-Lived Intangible Assets, Amortization Expense | 2,500 | $ 2,900 |
Finite-Lived Intangible Assets, Amortization Expense, Next Rolling Twelve Months | 2,300 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 1,200 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 1,200 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 1,100 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | $ 1,000 |  |
Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 20 years | 20 years |
Finite-Lived Intangible Assets, Gross | $ 13,600 | $ 13,600 |
Finite-Lived Intangible Assets, Accumulated Amortization | 2,329 | 1,645 |
Finite-Lived Intangible Assets, Net | 11,271 | 11,955 |
Trade Names [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross | 8,100 | 8,100 |
Finite-Lived Intangible Assets, Accumulated Amortization | 7,021 | 5,769 |
Finite-Lived Intangible Assets, Net | 1,079 | 2,331 |
Noncompete Agreements [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross | 4,200 | 4,200 |
Finite-Lived Intangible Assets, Accumulated Amortization | 2,056 | 1,464 |
Finite-Lived Intangible Assets, Net | $ 2,144 | $ 2,736 |
Minimum [Member] | Trade Names [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 6 months | 6 months |
Minimum [Member] | Noncompete Agreements [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 1 year | 1 year |
Maximum [Member] | Trade Names [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 6 years | 6 years |
Maximum [Member] | Noncompete Agreements [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 10 years | 10 years |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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