XML 18 R9.htm IDEA: XBRL DOCUMENT
v3.22.1

Note 2 - Significant Accounting Policies | 3 Months Ended
--- | ---
Mar. 31, 2022
Notes to Financial Statements |
Significant Accounting Policies [Text Block] | Note 2. Significant Accounting Policies ​ There have been no changes in the Company’s significant accounting policies for the three months ended March 31, 2022, as compared to the significant accounting policies described in its 2021 Annual Report, except as described below. ​ Recent Accounting Pronouncements ​​ Recent Accounting Pronouncements Yet to be Adopted To date, there have been no recent accounting pronouncement not yet effective that have significance, or potential significance, to our Consolidated Financial Statements.

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for all significant accounting policies of the reporting entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126899994&loc=d3e18726-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI https://asc.fasb.org/topic&trid=2122369 + Details
Name: | us-gaap_SignificantAccountingPoliciesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration