NOTE D — GOODWILL AND OTHER INTANGIBLE ASSETS

The Company completes its annual goodwill and indefinite lived intangible impairment analysis in the fourth quarter of each year. The Company has the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step quantitative goodwill impairment test. If the Company determines that a two-step goodwill impairment test is necessary or more efficient than a qualitative approach, it will measure the fair value of the Company’s reporting units using a combination of income, market and cost approaches. No triggering events have transpired since October 1, 2013.

Goodwill allocated to the Company’s operating segments for the six months ended June 30, 2014 and for the year ended 2013 are as follows:

(In thousands)	Patient Care			Products & Services		Total
Balance at December 31, 2013	$	545,265		$	136,282	$	681,547
Additions due to acquisitions	30,281			3,778		34,059
Adjustments	(63		)	113		50
Balance at June 30, 2014	$	575,483		$	140,173	$	715,656

(In thousands)	Patient Care			Products & Services		Total
Balance at December 31, 2012	$	538,492		$	136,282	$	674,774
Additions due to acquisitions	7,317			—		7,317
Adjustments	(544		)	—		(544		)
Balance at December 31, 2013	$	545,265		$	136,282	$	681,547

The balances related to intangible assets as of June 30, 2014 and December 31, 2013 are as follows:

	June 30, 2014							December 31, 2013
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer Lists	$	53,227	$	(13,841	)	$	39,386	$	46,932	$	(11,627	)	$	35,305
Trade Name	11,822		(510		)	11,312		10,023		(264		)	9,759
Patents and Other Intangibles	28,486		(16,667		)	11,819		28,441		(15,484		)	12,957
	$	93,535	$	(31,018	)	$	62,517	$	85,396	$	(27,375	)	$	58,021

Customer lists are amortized over their estimated period of benefit, generally 10 to 14 years. The majority of value associated to trade names is identified as an indefinite lived intangible asset, which is assessed for impairment on an annual basis. Trade names not identified as an indefinite lived intangible asset are amortized over their estimated period of benefit of approximately 1 to 5 years. Patents are amortized using the straight-line method over 5 years. Total intangible amortization expenses were $3.8 million and $3.3 million for the six months ended June 30, 2014 and June 30, 2013, respectively. The weighted average life of the additions to customer lists, patents and other intangibles is 10 years.