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GOODWILL AND OTHER INTANGIBLE ASSETS
12 Months Ended
Dec. 31, 2012
GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]  
GOODWILL AND OTHER INTANGIBLE ASSETS
NOTE 7 - GOODWILL AND OTHER INTANGIBLE ASSETS

The following table presents the changes in the carrying amount of goodwill and other intangible assets during the year ended December 31, 2012 (in thousands):

 
 
Goodwill
 
Other
Intangible Assets
 
Total
           
Balance as of December 31, 2011
$ 101,764
 
$ 43,194
 
$ 144,958
Acquired during the year
44,074
 
30,831
 
74,905
Adjustments to prior year estimates
(50)
 
50
 
-
Amortization
-
 
(10,886)
 
(10,886)
Balance as of December 31, 2012
$ 145,788
 
$ 63,189
 
$ 208,977

The following table presents the changes in the carrying amount of goodwill and other intangible assets during the year ended December 31, 2011 (in thousands):

 
 
Goodwill
 
Other
Intangible Assets
 
Total
           
Balance as of December 31, 2010
$  84,942
 
$ 32,236
 
$ 117,178
Acquired during the year
15,822
 
17,530
 
33,352
Payment of earnout
1,000
 
-
 
1,000
Amortization
-
 
(6,572)
 
(6,572)
Balance as of December 31, 2011
$ 101,764
 
$ 43,194
 
$ 144,958

The following table presents goodwill balance by reportable segment as of December 31, 2012 and 2011 (in thousands):

 
As of December 31,
2012
 
2011
Service Centers
$  121,901
 
$   77,877
Innovative Pumping Solutions
15,980
 
15,980
Supply Chain Services
7,907
 
7,907
Total
$  145,788
 
$ 101,764

The following table presents a summary of amortizable other intangible assets (in thousands):

 
As of December 31, 2012
 
As of December 31, 2011
 
Gross
Carrying
Amount
 
 
Accumulated
Amortization
 
Carrying Amount, net
 
Gross
Carrying
Amount
 
 
Accumulated
Amortization
 
Carrying Amount, net
Vendor agreements
$    2,496
 
$   (1,081)
 
$    1,415
 
$   2,496
 
$      (956)
 
$   1,540
Customer relationships
90,851
 
(30,010)
 
60,841
 
64,262
 
(23,508)
 
40,754
Non-compete agreements
1,541
 
(608)
 
933
 
2,611
 
(1,711)
 
900
Total
$ 94,888
 
$ (31,699)
 
$  63,189
 
$ 69,369
 
$ (26,175)
 
$ 43,194

Other intangible assets are generally amortized on a straight-line basis over their estimated useful lives. The estimated future annual amortization of intangible assets for each of the next five years and thereafter are as follows (in thousands):

2013
11,747
2014
11,473
2015
10,039
2016
7,735
2017
7,686
Thereafter
14,509