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Note 20 - Transactions With Related Entities (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Schedule of Related Party Transactions [Table Text Block] |
|  | Year Ended December 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
|  | (Dollars in thousands) |
Property rental fee expense paid to the Parent |  | $ | — |  |  | $ | — |  |  | $ | 303 |
Corporate financial, administrative, executive services, and research and development services provided to the Parent |  | $ | — |  |  | $ | — |  |  | $ | 148 |
Services rendered by an indirect shareholder of the Parent |  | $ | — |  |  | $ | — |  |  | $ | 15 |

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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