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Note 10 - Income Taxes (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	32.80%	37.30%
Income Tax Expense (Benefit)	$ 1,062,000	$ 640,000
Tax Adjustments, Settlements, and Unusual Provisions		$ 40,000
Accounting Standards Update 2016-09 [Member]
Income Tax Expense (Benefit)	$ (69,000)

X

- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

+ References

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