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INTANGIBLES AND OTHER ASSETS | 9 Months Ended
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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.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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