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Marketable Equity Securities - Change in Marketable Equity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Notes to Financial Statements
Gross cash proceeds from sales	$ 259
Cost	38
Gross gain (loss) on sale included in earnings during the period	221
Reclassification adjustment to unrealized gain in other comprehensive income for net (gain) loss included in earnings	(221)
Gross unrealized holding gain arising during the period included in other comprehensive income (loss)	128	169
Deferred taxes on unrealized holding gains included in other comprehensive (income) loss		$ (62)
Other comprehensive (loss) income from marketable equity securities	$ (93)

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This item represents the total realized gain (loss) included in earnings for the period as a result of selling marketable securities categorized as trading, available-for-sale, or held-to-maturity. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(c))
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Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (e)
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The cash inflow associated with the sale of equity securities classified as available-for-sale securities.

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-Name Accounting Standards Codification
-Glossary Investing Activities
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