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Note 18 - Cash and Cash Equivalents - Components of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement Line Items [Line Items]
Bank balances	$ 13,067	$ 14,335
Cash and cash equivalents in the statement of financial position	13,067	14,335
Bank overdrafts used for cash management purposes	(311)
Net cash and cash equivalents at year end	$ 12,756	$ 14,335	$ 10,880	$ 23,082

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- Definition

The amount of cash balances held at banks.

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The amount that has been withdrawn from an account in excess of existing cash balances. This is considered a short-term extension of credit by the bank. [Refer: Cash and cash equivalents]

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The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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The amount of cash and cash equivalents in the statement of cash flows when different from the amount of cash and cash equivalents in the statement of financial position. [Refer: Cash and cash equivalents]

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