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Note 8 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jan. 20, 2017	Dec. 31, 2016
Income Tax Expense (Benefit)	$ 1,082,990	$ 2,077,633	$ 957,541	$ 3,983,363
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	6,300,000	$ 6,100,000	8,600,000	$ 12,500,000
Unrecognized Tax Benefits	0		0			$ 100,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	0		0			$ 0
eNom, Incorporated [Member]
Deferred Tax Liabilities, Net					$ 21,900,000
Accounting Standards Update 2016-09 [Member]
Income Tax Expense (Benefit)	$ (1,200,000)		$ (2,200,000)

X

- Definition

Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e31931-109318

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+ References

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