Document and Entity Information
Document and Entity Information | Sep. 30, 2020 |
Cover [Abstract] | |
Entity Registrant Name | HOUGHTON MIFFLIN HARCOURT COMPANY |
Document Type | 8-K |
Amendment Flag | false |
Entity Central Index Key | 0001580156 |
Current Fiscal Year End Date | --12-31 |
Document Period End Date | Sep. 30, 2020 |
Entity Emerging Growth Company | false |
Entity File Number | 001-36166 |
Entity Incorporation, State or Country Code | DE |
Entity Tax Identification Number | 27-1566372 |
Entity Address, Address Line One | 125 High Street |
Entity Address, City or Town | Boston |
Entity Address, State or Province | MA |
Entity Address, Postal Zip Code | 02110 |
City Area Code | 617 |
Local Phone Number | 351-5000 |
Written Communications | false |
Soliciting Material | false |
Pre-commencement Tender Offer | false |
Pre-commencement Issuer Tender Offer | false |
Title of each class | Common Stock, $0.01 par value |
Trading Symbol | HMHC |
Name of each exchange on which registered | NASDAQ |