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INTANGIBLES AND OTHER ASSETS
 9 Months Ended
Sep. 30, 2013
Intangibles and Other Assets [Abstract]  
INTANGIBLES AND OTHER ASSETS
INTANGIBLES AND OTHER ASSETS

Intangibles and other assets consist of the following (in thousands, except amortization period data):
 
September 30,
2013
 
December 31,
2012
 
Weighted-
Average
Amortization
Period (in years)
Capitalized product development cost
$
2,140

 
$
2,140

 
4
Accumulated amortization
(1,981
)
 
(1,838
)
 
 
Capitalized product development cost, net
159

 
302

 
 
 
 
 
 
 
 
Building photography
13,566

 
12,474

 
5
Accumulated amortization
(11,830
)
 
(11,639
)
 
 
Building photography, net
1,736

 
835

 
 
 
 
 
 
 
 
Acquired database technology
77,325

 
77,328

 
5
Accumulated amortization
(38,284
)
 
(29,673
)
 
 
Acquired database technology, net
39,041

 
47,655

 
 
 
 
 
 
 
 
Acquired customer base
130,662

 
130,683

 
10
Accumulated amortization
(70,968
)
 
(59,218
)
 
 
Acquired customer base, net
59,694

 
71,465

 
 
 
 
 
 
 
 
Acquired trade names and other (1)
59,249

 
59,255

 
7
Accumulated amortization
(9,079
)
 
(8,880
)
 
 
Acquired trade names and other, net
50,170

 
50,375

 
 
 
 
 
 
 
 
Intangibles and other assets, net
$
150,800

 
$
170,632

 
 
 
(1) The weighted-average amortization period for acquired trade names excludes $48.7 million for acquired trade names recorded in connection with the LoopNet acquisition on April 30, 2012, which amount is not amortized, but is subject to annual impairment tests.