Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

ntangible assets consisted of the following (in thousands):

	Estimated Useful Life (in years)			December 31,
				2014			2013
Indefinite life trademarks	N/A			$	9,052		$	9,052
Patents	8	to	16	18,154			18,154
				27,206			27,206
Accumulated amortization - patents				(16,631		)	(14,591		)
				$	10,575		$	12,615

Amortization expense

Amortization expense was as follows (in thousands):

	Year Ended December 31,
	2014		2013		2012
Amortization expense	$	2,040	$	2,050	$	2,050

Future amortization expense

Future amortization of patents is as follows (in thousands):

2015	$	828
2016	430
2017	143
2018	65
2019	35
Thereafter	22
	$	1,523