GOODWILL AND OTHER INTANGIBLE ASSETS, NET

Information regarding the Company’s other intangible assets are as follows (in thousands):



	September 30, 2018							December 31, 2017
	Gross Amount		Accumulated Amortization			Net Amount		Gross Amount		Accumulated Amortization			Net Amount
Indefinite-lived intangible assets:
Tradenames	$	287,073	$	—		$	287,073	$	225,600	$	—		$	225,600
Finite-lived intangible assets:
Customer relationships	79,266		(16,195		)	63,071		22,497		(11,575		)	10,922
Copyrights & design	7,022		(975		)	6,047		—		—			—
Various	13,314		(10,795		)	2,519		12,088		(10,029		)	2,059
Total	$	386,675	$	(27,965	)	$	358,710	$	260,185	$	(21,604	)	$	238,581

The Company’s amortization expense, which is recorded on a straight-line basis, related to finite-lived intangible assets was $2.2 million and $6.3 million for the three and nine months ended September 30, 2018 and $0.8 million and $1.6 million for the three and nine months ended September 30, 2017, respectively. The expected amortization expense based on the finite-lived intangible assets as of September 30, 2018 are as follows (in thousands):



	Estimated Amortization
Remainder of 2018	$	2,249
2019	8,959
2020	8,886
2021	8,369
2022	8,044

The changes in the carrying amount of goodwill by reportable segment are as follows (in thousands):



	Office Segment			Lifestyle Segment			Total
Balance as of December 31, 2017	$	36,220		$	105,893		$	142,113
Foreign currency translation adjustment	(210		)	(13,326		)	(13,536		)
Goodwill acquired	—			194,508			194,508
Balance as of September 30, 2018	$	36,010		$	287,075		$	323,085