Other Intangible, Net and Goodwill

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

Other Intangibles, Net and Goodwill

All intangible assets determined to have finite lives are amortized over their estimated useful lives. The useful life of an intangible asset is the period over which the asset is expected to contribute directly or indirectly to future cash flows. There was no change in the gross amount of identifiable intangible assets during the three and nine months ended September 30, 2018. Amortization expense of $0.6 million, and $1.9 million for the three and nine months ended September 30, 2018 respectively, was included in depreciation and amortization in the consolidated statements of comprehensive income. Amortization expense was $0.8 million, and $1.8 million for the three and nine months ended September 30, 2017. Intangible assets subject to amortization consisted of the following at September 30, 2018:

	Amortization period (years)	Gross Amount		Accumulated Amortization		Net intangible assets
		(in thousands)
Customer relationships	20	$	13,600	$	2,158	$	11,442
Tradename	0.5-6	8,100		6,712		1,388
Covenants not to compete	1-10	4,200		1,934		2,266
		$	25,900	$	10,804	$	15,096

Changes in carrying amount of goodwill were as follows:

	(in thousands)
Balance at December 31, 2017	$	132,410
Acquisition	—
Balance at September 30, 2018	$	132,410