Acquired Intangible Assets

3 Months Ended

Mar. 31, 2014

Acquired Intangible Assets [Abstract]

Acquired Intangible Assets

Note 7. Acquired Intangible Assets

Acquired identifiable intangible assets consist of the following:

	March 31, 2014			December 31, 2013
	(In thousands)
Customer relationships	$	44,219		$	44,179
Trademarks and trade names		6,800			6,800
Non-compete agreements		910			910
Patents and supply contracts		723			723
Leaseholds		160			160
Total acquired intangible assets		52,812			52,772
Less accumulated amortization (1)		(20,353	)		(19,202	)
Net acquired intangible assets	$	32,459		$	33,570

(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 $1.1 million and $1.3 million for the three months ended March 31, 2014 and 2013, respectively.  Based on the current estimated useful lives assigned to our intangible assets, amortization expense is estimated to be $3.4 million for the remainder of 2014, $4.3 million in 2015, $4.2 million in 2016 and $15.4 million in the aggregate for the years 2017 through 2028.