Other Intangible Assets

3 Months Ended

Mar. 31, 2015

(9)Other Intangible Assets

The carrying values of the Company’s definite lived intangible assets as of March 31, 2015 and December 31, 2014, are as follows (in thousands):

	Patents			Non- Compete			Customer List			Total
Estimated useful life	14 years			5 years			5 years
Gross amount at March 31, 2015	$	429		$	512		$	2,046		$	2,987
Accumulated amortization at March 31, 2015	(429		)	(340		)	(1,344		)	(2,113		)
Net balance at March 31, 2015	$	—		$	172		$	702		$	874

Gross amount at December 31, 2014	$	429		$	512		$	2,046		$	2,987
Accumulated amortization at December 31, 2014	(429		)	(325		)	(1,280		)	(2,034		)
Net balance at December 31, 2014	$	—		$	187		$	766		$	953

Amortization expense related to intangible assets was approximately $79,000 and $119,000 for the three-month periods ended March 31, 2015 and 2014, respectively. The estimated remaining amortization expense as of March 31, 2015 is as follows (in thousands):

Remainder of:
2015	$	238
2016	318
2017	318
Total	$	874