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Unearned Revenues (Tables)
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12 Months Ended | |||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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| Deferred Revenue Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||
| Deferred Revenue, by Arrangement, Disclosure [Table Text Block] |
Unearned revenues result primarily from customers paying in advance for maintenance services to be performed and consisted of the following at December 31:
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- Definition
Tabular disclosure of the type of arrangements and the corresponding amounts that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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