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Note 5 - Accumulated Other Comprehensive Loss - Disclosure of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2017

Sep. 30, 2016

Sep. 30, 2017

Sep. 30, 2016

Beginning Balance

$ (40,163)

Ending Balance

$ (22,802)

(22,802)

Accumulated Foreign Currency Adjustment Attributable to Parent [Member]

Beginning Balance

(15,857)

$ (20,234)

(28,047)

$ (9,502)

Other comprehensive income (loss) before reclassifications

3,826

(315)

16,016

(11,047)

Amounts reclassified from AOCL

Net current-period other comprehensive income (loss)

3,826

(315)

16,016

(11,047)

Ending Balance

(12,031)

(20,549)

(12,031)

(20,549)

Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]

Beginning Balance

(11,040)

(11,362)

(11,040)

(11,362)

Other comprehensive income (loss) before reclassifications

Amounts reclassified from AOCL

Net current-period other comprehensive income (loss)

Ending Balance

(11,040)

(11,362)

(11,040)

(11,362)

Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]

Beginning Balance

(312)

(2,899)

(1,076)

(1,611)

Other comprehensive income (loss) before reclassifications

581

^[1]

779

^[2]

1,345

^[3]

(509)

^[4]

Amounts reclassified from AOCL

Net current-period other comprehensive income (loss)

581

779

1,345

(509)

Ending Balance

269

(2,120)

269

(2,120)

AOCI Attributable to Parent [Member]

Beginning Balance

(27,209)

(34,495)

(40,163)

(22,475)

Other comprehensive income (loss) before reclassifications

4,407

464

17,361

(11,556)

Amounts reclassified from AOCL

Net current-period other comprehensive income (loss)

4,407

464

17,361

(11,556)

Ending Balance

$ (22,802)

$ (34,031)

$ (22,802)

$ (34,031)

[1]	Represents unrealized gains of $934, net of tax effect of $(373) for the three months ended September 30, 2017.
[2]	Represents unrealized gains of $1,279, net of tax effect of $(500) for the three months ended September 30, 2016.
[3]	Represents unrealized gains of $2,188, net of tax effect of $(863) for the nine months ended September 30, 2017.
[4]	Represents unrealized losses of $(836), net of tax benefit of $327 for the nine months ended September 30, 2016.

X

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580

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X

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669619-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669625-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581

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X

- Definition

Amount after tax of reclassification adjustments of other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=84158357&loc=d3e1436-108581

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- Details

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