{"cik":1421517,"taxonomy":"us-gaap","tag":"LongTermDebt","label":"Long-term Debt","description":"Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","entityName":"Energy Recovery, Inc.","units":{"USD":[{"end":"2015-03-31","val":55000,"accn":"0001437749-15-009344","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-07","frame":"CY2015Q1I"},{"end":"2015-06-30","val":53000,"accn":"0001437749-15-015102","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-06","frame":"CY2015Q2I"},{"end":"2015-09-30","val":50000,"accn":"0001437749-15-019876","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-05","frame":"CY2015Q3I"},{"end":"2015-12-31","val":48000,"accn":"0001437749-16-026759","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04","frame":"CY2015Q4I"},{"end":"2016-03-31","val":46000,"accn":"0001437749-16-030989","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-05","frame":"CY2016Q1I"},{"end":"2016-06-30","val":43000,"accn":"0001437749-16-036494","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-04","frame":"CY2016Q2I"},{"end":"2016-09-30","val":41000,"accn":"0001437749-16-041012","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-03","frame":"CY2016Q3I"},{"end":"2016-12-31","val":38000,"accn":"0001437749-17-004189","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2016Q4I"},{"end":"2017-03-31","val":36000,"accn":"0001437749-17-008029","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-04","frame":"CY2017Q1I"},{"end":"2017-06-30","val":33000,"accn":"0001437749-17-013704","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-03","frame":"CY2017Q2I"},{"end":"2017-09-30","val":30000,"accn":"0001628280-17-010741","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-03","frame":"CY2017Q3I"},{"end":"2017-12-31","val":27000,"accn":"0001421517-18-000049","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-08","frame":"CY2017Q4I"}]}}