Note 21 - Subsequent Event (Details Textual) - USD ($)	1 Months Ended
Jan. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Capitalized Computer Software, Net		$ 31,900,000	$ 33,000,000
Computer Software, Intangible Asset [Member] \| Subsequent Event [Member] \| Components Being Replaced [Member]
Finite-Lived Intangible Assets, Remaining Amortization Period	210 days

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756

Name:	us-gaap_CapitalizedComputerSoftwareNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant