A small portion of the Company's revenues are derived from the combination of any or all of: (i) the sale and license of its products, (ii) fees associated with training, installation, and technical support services, and (iii) monitoring and lighting control services. Certain agreements, particularly related to lighting controls systems, represent multiple-element arrangements that include tangible products that contain software that is essential to the functionality of the systems and undelivered elements that primarily relate to installation, monitoring, and lighting control services. The undelivered elements associated with installation, monitoring, and lighting control services are reviewed and analyzed to determine separability in relation to the delivered elements and appropriate pricing treatment based on (a) vendor-specific objective evidence, (b) third-party evidence, or (c) management estimates. If deemed separate units of accounting, the revenue and associated cost of sales related to the delivered elements are recognized at the time of delivery, while those related to the undelivered elements are recognized appropriately based on the period of performance. If the separation criterion for the undelivered elements is not met because the undelivered elements are essential to the functionality of the lighting controls systems, all revenue and cost of sales attributable to the contract are deferred at the time of sale and are both generally recognized on a straight-line basis over the respective contract periods.
