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Note 8 - Leases (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Capital Lease Obligations	$ 900
Capita Llease Weighted Average Interest Rate	4.55%
Disposal Group, Including Discontinued Operation, Interest Expense			$ 99
Maximum Duration of Operating Leases	10 years
Operating Leases, Rent Expense, Net	$ 3,000	$ 3,200	$ 3,200

X

- Definition

Represents the weighted average interest rate on capital leases.

+ References

No definition available.

+ Details

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Period Type:	instant

X

- Definition

Maximum duration of operating leases (in years).

+ References

No definition available.

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X

- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
-Paragraph 1
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X

- Definition

Amount of interest expense attributable to disposal group, including, but not limited to, discontinued operation.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
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-URI http://asc.fasb.org/extlink&oid=26872618&loc=d3e7436-122677

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X

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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