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Note 5 - Transactions with Related Parties (Details) - The Fees Charged by CSM (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Related Party Transaction [Line Items] |  |  |  |  |
Fees charged by CSM | $ 63 | $ 465 | $ 3,521 | $ 4,998 | $ 13,901
CSM [Member] | Management Fee [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Fees charged by CSM | 17 |  |  |  |
CSM [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Fees charged by CSM | 17 |  |  |  |
Management Fee [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Fees charged by CSM | $ 33 | $ 158 | $ 505 | $ 2,345 | $ 5,575

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- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration