Property and Equipment
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Dec. 31, 2011
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Property and Equipment [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property and Equipment | Property and Equipment: Property and equipment consisted of the following (dollars in thousands):
Depreciation and amortization expense on property and equipment and capitalized internal-use software for the years ended December 31, 2011, 2010 and 2009 were $150.8 million, $126.6 million and $105.8 million, respectively. During the years ended December 31, 2011 and 2010, the Company wrote off $61.7 million and $14.9 million, respectively, of long-lived asset costs, with accumulated depreciation and amortization costs of $59.9 million and $14.5 million, respectively. These write-offs were primarily related to computer and networking equipment no longer in use. During the years ended December 31, 2011, 2010 and 2009, the Company capitalized $42.6 million, $32.8 million and $27.2 million, respectively, of external consulting fees and payroll and payroll-related costs for the development and enhancement of internal-use software applications. Additionally, during the years ended December 31, 2011, 2010 and 2009, the Company capitalized $7.5 million, $7.8 million and $6.3 million, respectively, of non-cash stock-based compensation related to employees who developed and enhanced internal-use software applications. During the years ended December 31, 2011 and 2010, the Company wrote off $4.6 million and $2.3 million, respectively, of internal-use software costs, with accumulated amortization costs of $3.9 million and $2.3 million, respectively. Such internal-use software is used by the Company primarily to operate, manage and monitor its deployed network and deliver its services to customers. The following table summarizes capitalized internal-use software costs (in thousands):
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