Note 18 - Subsequent Events	9 Months Ended
Sep. 30, 2019
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	( 18 ) Subsequent Events On October 17, 2019, the Board of Directors declared a cash dividend of $0.075 per share to shareholders of record on October 31, 2019 , payable on November 15, 2019 .

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

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