Entity Central Index Key Entity Central Index Key Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Trading Symbol Trading Symbol Entity File Number Entity File Number Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Soliciting Material Soliciting Material Entity Address, City or Town Entity Address, City or Town Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Local Phone Number Local Phone Number Entity Address, Postal Zip Code Entity Address, Postal Zip Code Written Communications Written Communications City Area Code City Area Code Cover page. Cover [Abstract] Title of 12(b) Security Title of 12(b) Security Document Type Document Type Amendment Flag Amendment Flag Security Exchange Name Security Exchange Name Entity Registrant Name Entity Registrant Name Entity Emerging Growth Company Entity Emerging Growth Company Entity Address, State or Province Entity Address, State or Province Document Period End Date Document Period End Date Pre-commencement Tender Offer Pre-commencement Tender Offer