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