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Deferred Revenue-Right-to-use contracts and Deferred commission expense | 9 Months Ended
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Sep. 30, 2015
Deferred Revenue Disclosure [Abstract] |
Deferred Revenue - Entry Of Right To Use Contracts and Deferred Commission Expense | Deferred Revenue-entry of right-to-use contracts and Deferred Commission Expense As of September 30, 2015 and December 31, 2014, the components of the change in deferred revenue-entry of right-to-use contracts and deferred commission expense are as follows (amounts in thousands):
| Nine Months Ended September 30,
| 2015 |  | 2014
Deferred revenue–upfront payments from right-to-use contracts, as of January 1, | $ | 74,174 |  |  | $ | 68,673 |
Right-to-use contracts current period, gross | 10,264 |  |  | 10,512 |
Revenue recognized from right-to-use contract upfront payments | (6,335 | ) |  | (6,209 | )
Right-to-use contract upfront payments, deferred, net | 3,929 |  |  | 4,303 |
Deferred revenue–upfront payments from right-to-use contracts, as of September 30, | $ | 78,103 |  |  | $ | 72,976 |
Deferred commission expense, as of January 1, | $ | 28,589 |  |  | $ | 25,251 |
Deferred commission expense | 4,821 |  |  | 4,734 |
Commission expense recognized | (2,629 | ) |  | (2,100 | )
Net increase in deferred commission expense | 2,192 |  |  | 2,634 |
Deferred commission expense, as of September 30, | $ | 30,781 |  |  | $ | 27,885 |

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- Definition Deferral of upfront payments and commission expense related to right-to-use contracts. + References No definition available. + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration