Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Additional Information (Details)

v2.4.1.9
Intangible Assets - Additional Information (Details) (USD $)
Dec. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]  
Estimated amortization expense, 2015 $ 501,000amda_FiniteLivedIntangibleAssetsAmortizationExpenseYearOne
Estimated amortization expense, 2016 501,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Estimated amortization expense, 2017 501,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Estimated amortization expense, 2018 501,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Estimated amortization expense, 2019 501,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Estimated amortization expense, thereafter $ 1,500,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive