Taxonomy Viewer

Name	MarketableSecuritiesHeldToMaturitySecuritiesPolicy
Namespace	http://fasb.org/us-gaap/2020-01-31
Prefix	us-gaap
Data type	nonnum:textBlockItemType
Period type	duration
Substitution Group	xbrli:item
Balance	None
Nillable	True
Abstract	False

Text	Lang	Role	Container role
Marketable Securities, Held-to-maturity Securities, Policy [Policy Text Block] (Deprecated 2018-01-31)	en-US	http://www.xbrl.org/2003/role/label	http://www.xbrl.org/2003/role/link
Disclosure of accounting policy for investments in debt securities (which may include mandatorily redeemable preferred shares or preferred shares redeemable at the investing Company's option) that are classified as held-to-maturity. This policy also may describe the entity's accounting treatment for transfers between investment categories, how the entity determines whether impairments of held-to-maturity securities are other than temporary, and how the fair values of such securities are determined.	en-US	http://www.xbrl.org/2003/role/documentation	http://www.xbrl.org/2003/role/link

	Name	Relation Type	Role
	Deprecated Items [Abstract] `us-gaap:DeprecatedItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
	Marketable Securities, Policy [Policy Text Block] `us-gaap:MarketableSecuritiesPolicy`	dep-aggregateConcept-deprecatedPartConcept	http://fasb.org/us-gaap/role/deprecated/deprecated