Goodwill and Other Intangible Assets

Goodwill and other intangible assets, net of accumulated amortization, at June 30, 2018 and December 31, 2017 are as follows (in thousands):



	June 30, 2018		December 31, 2017
Goodwill	$	430,705	$	433,374
Other intangible assets, net	334,345		347,212
Total goodwill and other intangible assets, net	$	765,050	$	780,586

There were no material additions to goodwill and other intangible assets for the three and six months ended June 30, 2018 and 2017.

The changes in the carrying amount of goodwill for the six months ended June 30, 2018 were as follows (in thousands):



	Six months ended June 30, 2018
Goodwill, beginning of period	$	433,374
Currency translation effect on foreign goodwill balances	(2,669		)
Goodwill, end of period	$	430,705

The components of other intangible assets were as follows (in thousands):



	Total estimated life (years)	June 30, 2018			December 31, 2017
Non-amortizable—indefinite lived:
Brand names		$	230,346		$	230,709
Amortizable:
Non-compete agreements	5	540			540
Dealer/customer related	5-10	168,419			169,694
Developed technology	5-7	22,769			22,903
Total amortizable		191,728			193,137
Less: Accumulated amortization		(87,729		)	(76,634		)
Net amortized other intangible assets		103,999			116,503
Total other intangible assets, net		$	334,345		$	347,212

Amortization expense for intangible assets for the three months ended June 30, 2018 and 2017 was $6,058,000 and $6,238,000, respectively. Estimated amortization expense for the remainder of 2018 through 2023 is as follows: 2018 (remainder), $11,800,000; 2019, $22,300,000; 2020, $17,300,000; 2021, $14,400,000; 2022, $9,800,000; 2023, $7,600,000; and after 2023, $20,800,000. The preceding expected amortization expense is an estimate and actual amounts could differ due to additional intangible asset acquisitions, changes in foreign currency rates or impairment of intangible assets.