Rendering

Component: (Network and Table)
Network
40202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Changes in AOCI (Details)
(http://www.exactsciences.com/role/DisclosureSummaryOfSignificantAccountingPoliciesChangesInAociDetails)
TableAccumulated Other Comprehensive Income (Loss) [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001124140 (http://www.sec.gov/CIK)
Changes in Accumulated Other Comprehensive Income (Loss)Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Equity Components [Axis]Equity Components [Axis]Equity Components [Axis]
Accumulated Net Unrealized Investment Gain LossCumulative Translation AdjustmentEquity Component [Domain]Accumulated Net Unrealized Investment Gain LossCumulative Translation AdjustmentEquity Component [Domain]Accumulated Net Unrealized Investment Gain LossEquity Component [Domain]
Accumulated Other Comprehensive Income Loss Roll forward
        
Beginning Balance
(444,000) 
11,000  
(433,000) 
(115,000) 
 
(115,000) 
125,000  
125,000  
Other comprehensive (loss) income before reclassifications
117,000  
(215,000) 
(98,000) 
(361,000) 
11,000  
(350,000) 
(200,000) 
(200,000) 
Amounts reclassified from accumulated other comprehensive loss
113,000  
 
113,000  
32,000  
 
32,000  
(40,000) 
(40,000) 
Net current period change in accumulated other comprehensive (loss) income
230,000  
 
(215,000) 
 
15,000  
 
(329,000) 
 
11,000  
 
(318,000) 
 
(240,000) 
 
(240,000) 
 
Ending Balance
(214,000) 
 
(204,000) 
 
(418,000) 
 
(444,000) 
 
11,000  
 
(433,000) 
 
(115,000) 
 
(115,000)