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Intangible Assets and Goodwill | 12 Months Ended
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Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets and Goodwill | Intangible Assets and Goodwill The following tables summarize the intangible assets subject to amortization for the years ended December 31, 2014 and December 31, 2013.
| 2014
| Amortization period (years) |  | Gross Amount |  | Accumulated Amortization |  | Net intangible assets
|  |  | (in thousands)
Customer relationships | 20 |  | $ | 7,600 |  |  | $ | 428 |  |  | $ | 7,172 |
Tradename | 6 |  | 7,400 |  |  | 1,388 |  |  | 6,012 |
Covenants not to compete | 10 |  | 3,100 |  |  | 351 |  |  | 2,749 |
Real estate options | 2.2 |  | 942 |  |  | 495 |  |  | 447 |
|  |  | $ | 19,042 |  |  | $ | 2,662 |  |  | $ | 16,380 |
| 2013
| Amortization period (years) |  | Gross Amount |  | Accumulated Amortization |  | Net intangible assets
|  |  | (in thousands)
Customer relationships | 20 |  | $ | 7,600 |  |  | $ | 48 |  |  | $ | 7,552 |
Tradename | 6 |  | 7,400 |  |  | 154 |  |  | 7,246 |
Covenants not to compete | 10 |  | 3,100 |  |  | 39 |  |  | 3,061 |
Real estate options | 2.2 |  | 942 |  |  | 55 |  |  | 887 |
|  |  | $ | 19,042 |  |  | $ | 296 |  |  | $ | 18,746 |
Amortization expense associated with identifiable intangible assets at acquisition-date fair values from the date of acquisition to December 31, 2013 and for the twelve months ended December 31, 2014 was $0.3 million and $2.4 million, respectively, and was included in depreciation and amortization in the consolidated statements of comprehensive income. Future amortization expense for intangible assets is estimated at $2.4 million the year ending December, 31, 2015, $1.9 million for 2016, $1.9 million for 2017, $1.9 million for 2018, and $1.8 million for 2019. Changes in carrying amount of goodwill were as follows:
| (in thousands)
Balance at January 1, 2013 | 4,815 |
Acquisitions | 93,871 |
Balance at December 31, 2013 | 98,686 |
Acquisition adjustments | 1,526 |
Balance at December 31, 2014 | 100,212 |
Included in the carrying amount of goodwill at December 31, 2013 was $1.5 million, which was included in accounts payable and accrued liabilities as of December 31, 2013, representing a working capital adjustment for additional amounts owed to the sellers of GTI for the amount by which the cash balance actually delivered at closing exceeded the estimated cash balance of $20.0 million to be paid at closing on November 11, 2013. The final consideration transferred over the net amount of assets and liabilities recognized on November 11, 2013 (goodwill) was still subject to post closing working capital adjustments at December 31, 2013. The working capital adjustments were finalized in March 2014 resulting in an additional payment of $3.0 million, which included the$1.5 million liability recorded at December 31, 2013. Goodwill and identifiable intangible assets are tested at least annually for impairment by applying a fair value based analysis in accordance with the authoritative accounting guidance on goodwill and other intangible assets. We perform an annual impairment test as of the end of September each year or any other time when indicators requiring further assessment are identified. There were no indicators requiring further assessment that were identified during the twelve month period ended December 31, 2014 and our 2014 annual impairment test resulted in no impairment.

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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