ars ended December 31. 2014 and 2013: Intangible Aawts, Cross of Accumulated Amortization Accumulated Amortization Intangible Assets, Net of Accurnulated Amortization Beginning balance as of January 1, 2014 $ 2,370 $ (1.933) $ 437 Additions 340 340 Retirements (401) 401 Amortization —