Acquired Intangible Assets

6 Months Ended

Jun. 30, 2015

Acquired Intangible Assets [Abstract]

Acquired Intangible Assets

Note 6. Acquired Intangible Assets

Acquired identifiable intangible assets consist of the following:

	June 30, 2015			December 31, 2014
	(In thousands)
Customer relationships	$	48,696		$	48,646
Trademarks and trade names		6,800			6,800
Non-compete agreements		970			970
Patents and supply contracts		723			723
Leaseholds		160			160
Total acquired intangible assets		57,349			57,299
Less accumulated amortization (1)		(26,661	)		(24,120	)
Net acquired intangible assets	$	30,688		$	33,179

(1) Applies to all intangible assets, except for trademarks and trade names totaling $5.2 million, which have indefinite useful lives and, as such, are not being amortized.

Total amortization expense for acquired intangible assets was $1.2 million and $2.5 million for the three months and six months ended June 30, 2015, respectively, and $1.2 million and $2.4 million for the comparable periods in 2014.  Based on the current estimated useful lives assigned to our acquired intangible assets, amortization expense is estimated to be $2.5 million for the remainder of 2015, $4.9 million in 2016, $4.7 million in 2017, $4.5 million in 2018 and $8.9 million in the aggregate for the years 2019 through 2028.