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Note 13 - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Parent Company [Member] |  |
Cash flows from operating activities | $ 7,848 | $ 15,726
Investing activities: |  |
Additions to properties, plants, equipment and mineral interests | $ (53) | $ (424)
Other investing activities, net |  |
Financing activities: |  |
Dividends paid to stockholders | $ (1,090) | $ (1,062)
Payments on debt |  |
Other financing activity | $ (9,833) | $ (15,841)
Effect of exchange rates on cash |  |
Changes in cash and cash equivalents | $ (3,128) | $ (1,601)
Cash and cash equivalents at beginning of period | 94,167 | 146,885
Cash and cash equivalents at end of period | 91,039 | 145,284
Cash flows from operating activities | 7,848 | 15,726
Guarantor Subsidiaries [Member] |  |
Cash flows from operating activities | (21,658) | 15,823
Investing activities: |  |
Additions to properties, plants, equipment and mineral interests | (18,552) | (18,163)
Other investing activities, net | $ 215 | $ 25
Financing activities: |  |
Dividends paid to stockholders |  |
Payments on debt | $ (2,556) | $ (1,901)
Other financing activity | $ 27,189 | $ 6,349
Effect of exchange rates on cash |  |
Changes in cash and cash equivalents | $ (15,362) | $ 2,133
Cash and cash equivalents at beginning of period | 42,692 | 33,824
Cash and cash equivalents at end of period | 27,330 | 35,957
Cash flows from operating activities | (21,658) | 15,823
Non-Guarantor Subsidiaries [Member] |  |
Cash flows from operating activities | (7,884) | 19,902
Investing activities: |  |
Additions to properties, plants, equipment and mineral interests | (16,049) | (8,371)
Other investing activities, net | $ (3,900) | $ (947)
Financing activities: |  |
Dividends paid to stockholders |  |
Payments on debt | $ (226) | $ (446)
Other financing activity | 23,823 | (21,544)
Effect of exchange rates on cash | 1,535 | (2,560)
Changes in cash and cash equivalents | (2,701) | (13,966)
Cash and cash equivalents at beginning of period | 18,350 | 28,956
Cash and cash equivalents at end of period | 15,649 | 14,990
Cash flows from operating activities | (7,884) | 19,902
Consolidation, Eliminations [Member] |  |
Cash flows from operating activities | $ 40,442 | $ (30,032)
Investing activities: |  |
Additions to properties, plants, equipment and mineral interests |  |
Other investing activities, net |  |
Financing activities: |  |
Dividends paid to stockholders |  |
Payments on debt |  |
Other financing activity | $ (40,442) | $ 30,032
Effect of exchange rates on cash |  |
Changes in cash and cash equivalents |  |
Cash and cash equivalents at beginning of period |  |
Cash and cash equivalents at end of period |  |
Cash flows from operating activities | $ 40,442 | $ (30,032)
Consolidated [Member] |  |
Cash flows from operating activities | 18,748 | 21,419
Investing activities: |  |
Additions to properties, plants, equipment and mineral interests | (34,654) | (26,958)
Other investing activities, net | (3,685) | (922)
Financing activities: |  |
Dividends paid to stockholders | (1,090) | (1,062)
Payments on debt | (2,782) | (2,347)
Other financing activity | 737 | (1,004)
Effect of exchange rates on cash | 1,535 | (2,560)
Changes in cash and cash equivalents | (21,191) | (13,434)
Cash and cash equivalents at beginning of period | 155,209 | 209,665
Cash and cash equivalents at end of period | 134,018 | 196,231
Cash flows from operating activities | 18,748 | 21,419
Cash flows from operating activities | 18,748 | 21,419
Additions to properties, plants, equipment and mineral interests | (34,654) | (26,958)
Effect of exchange rates on cash | 1,535 | (2,560)
Changes in cash and cash equivalents | (21,191) | (13,434)
Cash and cash equivalents at beginning of period | 155,209 | 209,665
Cash and cash equivalents at end of period | 134,018 | 196,231
Cash flows from operating activities | $ 18,748 | $ 21,419

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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + 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=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585 + Details
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