Commitments and Contingencies

9 Months Ended

Sep. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies — There have been no material changes during the nine months ended September 30, 2014 to the commitments and contingencies previously reported in the 2013 Annual Report except as noted below.

In March 2014, we entered into an exclusive agreement with a vendor to purchase a minimum number of paging devices over a three-year period. We have a purchase commitment of $8.3 million over this three year contractual term.

In April 2014, we entered into an agreement with a vendor for certain information technology services over a three-year contract term. The total contractual obligation is $1.6 million.

In April 2014, we amended an existing agreement with a vendor for our headquarters office space in Springfield, Virginia. We extended the original lease term for an additional 3 years with the new lease term expiring on March 31, 2018. In addition, we retained an adjacent office space for a lease period of 4 years also expiring on March 31, 2018. The additional rent expense, net of rent abatement, associated with the amendment is estimated to be approximately $1.2 million over the amended lease term.

In October 2014, we amended an existing agreement with a vendor for our office space in Plano, Texas. We extended the original lease term for an additional 2 years with the new lease term expiring on September 30, 2018. The additional rent expense, net of rent abatement, associated with the amendment is estimated to be approximately $1.1 million over the amended lease terms.