XML 76 R48.htm IDEA: XBRL DOCUMENT v3.8.0.1
Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Schedule of Estimated Useful Lives and Depreciation Calculation Methods

Depreciation is calculated at annual rates designed to write off the costs of assets over their estimated useful lives as follows:

 

    Engineering equipment    5 to 10 years    straight-line   
    Office equipment    5 to 10 years    straight-line   
    Leasehold improvements       straight-line over term of lease to a maximum of 15 years or the improvement’s economic life   
    Other    5 to 50 years    straight-line