Inventories	6 Months Ended
Inventories	Jun. 30, 2011
Inventory Disclosure [Abstract]
Inventories	Note 5. Inventories Inventory includes parts, materials and supplies stored in our warehouses to support basic levels of service and maintenance as well as scheduled capital projects and equipment awaiting configuration for customers. Inventory also includes parts and equipment shipped directly from vendors to customer locations while in transit and parts and equipment returned from customers which is being returned to vendors for credit, as well as maintenance contracts associated with customer sales which have not yet transferred to the customer. The inventory value in the Business Sector, comprised of finished goods in transit to customers as of June 30, 2011 and December 31, 2010 was $2,894,000 and $3,460,000, respectively. The inventory level in the Business Sector is subject to the variations in the equipment revenue and the timing of individual customer orders. The inventory value in the Telecom Sector, comprised of raw materials, as of June 30, 2011 and December 31, 2010 was $1,906,000 and $1,745,000, respectively. We value inventory using the lower of cost (perpetual weighted average-cost or specific identification) or market method. We make estimates related to the valuation of inventory. We adjust our inventory carrying value for estimated obsolescence or unmarketable inventory to the estimated market value based upon assumptions about future demand and market conditions. As market and other conditions change, we may establish additional inventory reserves.

The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income.

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