Note 7 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Internal Revenue Service (IRS) [Member] \| Earliest Tax Year [Member]
Open Tax Year	2012
Internal Revenue Service (IRS) [Member] \| Latest Tax Year [Member]
Open Tax Year	2015
State and Foreign Jurisdictions [Member] \| Earliest Tax Year [Member]
Open Tax Year	2011
State and Foreign Jurisdictions [Member] \| Latest Tax Year [Member]
Open Tax Year	2015
Effective Income Tax Rate Reconciliation, Percent	37.60%	40.00%
Unrecognized Tax Benefits	$ 0.4
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	0.3
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 0.1

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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-Name Accounting Standards Codification
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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of unrecognized tax benefits.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6527854

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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