Note 16 - Subsequent Events	6 Months Ended
Jun. 30, 2022
Notes to Financial Statements
Subsequent Events [Text Block]	16. Subsequent Events Subsequent to June 30, 2022, the Company repurchased 536,633 shares of its common stock for $123,900, all funded with cash on hand. Additionally, on July 29, 2022, the Company's Board of Directors approved another stock repurchase program, which commenced on August 5, 2022, and allows for the repurchase of up to $500,000 of the Company's common stock over a 24-month period.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI https://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration