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. In conjunction with the Company’s evaluation of operating segments disclosed in Note L, the Company assessed its reporting unit structure and determined no changes were necessary. As such, the Company concluded there was not a triggering event to re-evaluate whether a potential impairment of goodwill had occurred. No triggering events have transpired since December 31, 2012.

Goodwill allocated to the Company’s operating segments for the three months ended March 31, 2013 and 2012 is as follows:

(In thousands)	Patient Care			Products & Services		Total
Balance at December 31, 2012	$	538,492		$	136,282	$	674,774
Additions due to acquisitions	—			—		—
Contingent considerations (1)	—			—		—
Adjustments	(358		)	—		(358		)
Balance at March 31, 2013 (unaudited)	$	538,134		$	136,282	$	674,416

	Patient Care		Products & Services		Total
Balance at December 31, 2011	$	474,166	$	135,318	$	609,484
Additions due to acquisitions	1,372		—		1,372
Contingent considerations (1)	127		—		127
Adjustments	163		—		163
Balance at March 31, 2012 (unaudited)	$	475,828	$	135,318	$	611,146

(1) Contingent consideration relates to acquisitions completed prior to the adoption of ASC 805.

The balances related to intangible assets for the three months ended March 31, 2013 and 2012 is as follows:

	31-Mar-13							31-Dec-12
	Gross					Net		Gross					Net
	Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
(In thousands)	Amount		Amortization			Amount		Amount		Amortization			Amount
Customer Lists	$	48,044	$	(8,872	)	$	39,172	$	48,044	$	(7,846	)	$	40,198
Trade Name	9,070		—			9,070		9,070		—			9,070
Patents and Other Intangibles	27,859		(13,440		)	14,419		27,810		(12,797		)	15,013
	84,973		(22,312		)	62,661		84,924		(20,643		)	64,281

Customer lists are amortized over their estimated period of benefit, generally 10 to 14 years. Patents are amortized using the straight-line method over 5 years. Total intangible amortization expenses were $1.7 million and $2.8 million for the three months ended March 31, 2013 and March 31, 2012, respectively.