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Network
160 - Disclosure - Income Taxes - Summary of Loss Before Provision for Income Taxes (Detail)
(http://www.chiasmapharma.com/taxonomy/role/DisclosureIncomeTaxesSummaryOfLossBeforeProvisionForIncomeTaxes)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001339469 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Income Tax Disclosure [Abstract]
 
 
 
Domestic
(61,390,000) 
(35,219,000) 
(1,493,000) 
Foreign
626,000  
(528,000) 
(342,000) 
Loss before provision for income taxes
(60,764,000) 
 
(35,747,000) 
 
(1,835,000)