Intangible Assets Other Than Goodwill

6 Months Ended

Jun. 30, 2013

Note 13 — Intangible Assets Other Than Goodwill

Intangible assets other than goodwill consist primarily of licenses, product lines, customer relationships and trademarks. Amortized intangible assets are included in Intangibles in the accompanying balance sheets. Trademarks are disclosed separately in the accompanying balance sheets. Debt offering costs from the issuance of the Company’s convertible senior notes are included in Other Long Term Assets in the accompanying balance sheets. Intangible assets and debt issuance costs are as follows (in thousands, except for weighted useful lives):

		December 31, 2012							June 30, 2013
	Weighted Useful Lives	Gross Carrying Amount		Accumulated Amortization			Net Amount		Gross Carrying Amount		Accumulated Amortization			Net Amount
	(Years)

Amortized Intangible Assets:
Licenses	4.96	$	91,488	$	(77,844	)	$	13,644	$	91,488	$	(79,240	)	$	12,248
Product lines	5.84		66,594		(19,561	)		47,033		66,594		(20,314	)		46,280
Customer relationships	5.21		9,347		(5,903	)		3,444		9,347		(6,444	)		2,903
Trade names	5.00		3,000		(250	)		2,750		3,000		(550	)		2,450
Non-compete/Employment contracts	3.90		3,333		(3,150	)		183		3,333		(3,170	)		163
Total amortized intangible assets			173,762		(106,708	)		67,054		173,762		(109,718	)		64,044
Deferred Costs:
Debt issuance costs	2.79		4,224		(2,609	)		1,615		4,224		(3,243	)		981
Unamortized Intangible Assets:
Trademarks			2,308		―			2,308		2,308		―			2,308
Total Intangible Assets:		$	180,294	$	(109,317	)	$	70,977	$	180,294	$	(112,961	)	$	67,333

Amortization expense related to limited life intangible assets and debt offering costs was $1.7 million and $2.2 million for the three months ended June 30, 2012 and 2013, respectively, and $2.4 million and $3.6 million for the six months ended June 30, 2012 and 2013, respectively.