|6 Months Ended
Jun. 30, 2014
|Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets were acquired in conjunction with the four acquisitions during 2013 and were recorded at their fair value at such time. Trademarks are amortized on a straight-line basis over their useful life of ten years. Patents are amortized on a straight-line basis over the life of the patent (twenty years or less), commencing when the patent is approved and placed in service on a straight line basis. Awarded government contracts are amortized over and in proportion to the collection period (18 months or less) of the grant.
In connection with the Blink acquisition, the Company acquired certain trademarks related to the Blink charging network and certain technological patents relating to electric vehicle charging equipment. In connection with the acquisition of Beam, the Company acquired awarded government contracts. These intangible assets were capitalized at their estimated fair values at the respective dates of acquisition and will be amortized over their remaining estimated useful lives.
Amortization expense related to intangible assets for the three months ended and six months ended June 30, 2014 and 2013, was $11,849, $120,908, $263,656 and $127,814 respectively.
Based on the intangible assets recorded at June 30, 2014, and assuming no subsequent impairment of the underlying assets, annual amortization expense for the next five years is expected to be as follows: