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customers).","units":{"USD":[{"end":"2011-12-31","val":3150000,"accn":"0001157523-13-001572","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27","frame":"CY2011Q4I"},{"end":"2012-12-31","val":1363000,"accn":"0001157523-13-001572","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27"},{"end":"2012-12-31","val":1400000,"accn":"0001157523-14-001170","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-24","frame":"CY2012Q4I"},{"end":"2013-12-31","val":1600000,"accn":"0001157523-14-001170","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-24"},{"end":"2013-12-31","val":1600000,"accn":"0001157523-15-001025","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-26","frame":"CY2013Q4I"},{"end":"2014-12-31","val":1600000,"accn":"0001157523-15-001025","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-26"},{"end":"2014-12-31","val":1600000,"accn":"0001144204-16-090338","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-25","frame":"CY2014Q4I"},{"end":"2015-12-31","val":1300000,"accn":"0001144204-16-090338","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-25"},{"end":"2015-12-31","val":1300000,"accn":"0001144204-17-016524","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-24","frame":"CY2015Q4I"},{"end":"2016-12-31","val":1500000,"accn":"0001144204-17-016524","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-24"},{"end":"2016-12-31","val":1500000,"accn":"0001144204-18-017977","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-29","frame":"CY2016Q4I"},{"end":"2017-12-31","val":3000000,"accn":"0001144204-18-017977","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-29"},{"end":"2017-12-31","val":3000000,"accn":"0001144204-19-016772","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-29","frame":"CY2017Q4I"},{"end":"2018-12-31","val":5100000,"accn":"0001144204-19-016772","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-29"},{"end":"2018-12-31","val":5100000,"accn":"0001104659-20-039282","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-27","frame":"CY2018Q4I"},{"end":"2019-12-31","val":6200000,"accn":"0001104659-20-039282","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-27","frame":"CY2019Q4I"}]}},"CashCashEquivalentsAndShortTermInvestments":{"label":"Cash, 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Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. 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