Intangible Assets and Goodwill

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

The following tables summarize the intangible assets subject to amortization for the years ended December 31, 2017 and December 31, 2016.



	2017
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	20	$	13,600	$	1,645	$	11,955
Tradename	0.5-6	8,100		5,769		2,331
Covenants not to compete	1-10	4,200		1,464		2,736
		$	25,900	$	8,878	$	17,022



	2016
	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	20	$	7,600	$	1,187	$	6,413
Tradename	6	7,400		3,854		3,546
Covenants not to compete	10	3,100		969		2,131
		$	18,100	$	6,010	$	12,090

Amortization expense for the twelve months ended December 31, 2017 and 2016 was $2.9 million and $1.9 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 $2.5 million for 2018, $2.2 million for 2019, $1.2 million for 2020, and $1.2 million for 2021, and $1.1 million for 2022.

Changes in carrying amount of goodwill were as follows:



	(in thousands)
Balance at December 31, 2016	$	100,212
Acquisition	32,198
Balance at December 31, 2017	$	132,410

- 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.

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