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Note 14 - Guarantor Subsidiaries (Details) - Condensed Consolidating Statements of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from operating activities | $ 78,968 | $ 58,768
Cash flows from investing activities: |  |
Additions to properties, plants, and equipment | (95,399) | (90,697)
Acquisition of Revett, net of cash acquired | (809) |
Cash flows from financing activities: |  |
Effect of exchange rates on cash | (4,044) | (2,124)
Changes in cash and cash equivalents | (35,211) | 10,185
Cash and cash equivalents at beginning of period | 209,665 | 212,175
Cash and cash equivalents at end of period | 174,454 | 222,360
Consolidation, Eliminations [Member] |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from operating activities | (28,164) | (31,968)
Cash flows from financing activities: |  |
Other financing activity | 28,164 | 31,968
Consolidated [Member] |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from operating activities | 78,968 | 58,768
Cash flows from investing activities: |  |
Additions to properties, plants, and equipment | (95,399) | (90,697)
Acquisition of Revett, net of cash acquired | (809) |
Other investing activities | (670) | 4,201
Cash flows from financing activities: |  |
Dividends paid to stockholders | (3,210) | (3,043)
Payments on debt | (8,049) | (6,893)
Other financing activity | (1,998) | 49,973
Effect of exchange rates on cash | (4,044) | (2,124)
Changes in cash and cash equivalents | (35,211) | 10,185
Cash and cash equivalents at beginning of period | 209,665 | 212,175
Cash and cash equivalents at end of period | 174,454 | 222,360
Parent Company [Member] |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from operating activities | 11,043 | 37,533
Cash flows from investing activities: |  |
Additions to properties, plants, and equipment | (436) | (1,057)
Acquisition of Revett, net of cash acquired | (809) |
Other investing activities | 61 |
Cash flows from financing activities: |  |
Dividends paid to stockholders | (3,210) | (3,043)
Other financing activity | (29,949) | (7,965)
Changes in cash and cash equivalents | (23,300) | 25,468
Cash and cash equivalents at beginning of period | 146,885 | 126,271
Cash and cash equivalents at end of period | 123,585 | 151,739
Guarantor Subsidiaries [Member] |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from operating activities | 63,831 | 32,896
Cash flows from investing activities: |  |
Additions to properties, plants, and equipment | (69,930) | (58,472)
Other investing activities | 172 | 358
Cash flows from financing activities: |  |
Payments on debt | (7,109) | (6,878)
Other financing activity | 24,294 | 40,292
Changes in cash and cash equivalents | 11,258 | 8,196
Cash and cash equivalents at beginning of period | 33,824 | 40,009
Cash and cash equivalents at end of period | 45,082 | 48,205
Non-Guarantor Subsidiaries [Member] |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Cash flows from operating activities | 32,258 | 20,307
Cash flows from investing activities: |  |
Additions to properties, plants, and equipment | (25,033) | (31,168)
Other investing activities | (903) | 3,843
Cash flows from financing activities: |  |
Payments on debt | (940) | (15)
Other financing activity | (24,507) | (14,322)
Effect of exchange rates on cash | (4,044) | (2,124)
Changes in cash and cash equivalents | (23,169) | (23,479)
Cash and cash equivalents at beginning of period | 28,956 | 45,895
Cash and cash equivalents at end of period | $ 5,787 | $ 22,416

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49171198&loc=d3e33268-110906 + Details
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- Definition Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49171198&loc=d3e33268-110906 + Details
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- Definition The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3098-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3095-108585 + Details
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