Rendering

Component: (Network and Table)
Network
000380 - Disclosure - Note 1 - Nature of Operations and Summary of Significant Accounting Policies: Warranty Reserve: Schedule of Product Warranty Reserve (Details)
(http://www.es.com/20161231/role/idr_DisclosureNote1NatureOfOperationsAndSummaryOfSignificantAccountingPoliciesWarrantyReserveScheduleOfProductWarrantyReserveDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000276283 (http://www.sec.gov/CIK)
DetailsPeriod [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Details
 
 
Ending balance
127,000  
125,000  
Additions to warranty reserve
227,000  
149,000  
Warranty costs
(231,000) 
(147,000) 
Ending balance
123,000  
 
127,000