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Note 16 - Guarantor Subsidiaries - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Cash flows from operating activities | $ 225,328 | $ 106,445 | $ 83,124
Cash flows from investing activities: |  |  |
Additions to properties, plants, and equipment | (164,788) | (137,443) | (122,537)
Purchase of other companies, net of cash acquired | (3,931) | (809) |
Other investing activities, net | (29,946) | (1,163) | 4,182
Cash flows from financing activities: |  |  |
Dividends paid to stockholders | (4,419) | (4,291) | (4,099)
Payments on debt | (11,156) | (10,851) | (9,137)
Other financing activity | 3,554 | (2,001) | 49,740
Effect of exchange rate changes on cash | (74) | (5,152) | (3,783)
Changes in cash and cash equivalents | 14,568 | (54,456) | (2,510)
Cash and cash equivalents at beginning of year | 155,209 | 209,665 | 212,175
Cash and cash equivalents at end of year | 169,777 | 155,209 | 209,665
Cash flows from operating activities | 225,328 | 106,445 | 83,124
Consolidation, Eliminations [Member] |  |  |
Cash flows from operating activities | (19,606) | (2,629) | (75,323)
Cash flows from investing activities: |  |  |
Additions to properties, plants, and equipment |  |  |
Purchase of other companies, net of cash acquired |  |  |
Other investing activities, net |  |  |
Cash flows from financing activities: |  |  |
Dividends paid to stockholders |  |  |
Payments on debt |  |  |
Other financing activity | 19,606 | 2,629 | 75,323
Effect of exchange rate changes on cash |  |  |
Changes in cash and cash equivalents |  |  |
Cash and cash equivalents at beginning of year |  |  |
Cash and cash equivalents at end of year |  |  |
Cash flows from operating activities | (19,606) | (2,629) | (75,323)
Parent Company [Member] | Reportable Legal Entities [Member] |  |  |
Cash flows from operating activities | 85,665 | (56,036) | 38,270
Cash flows from investing activities: |  |  |
Additions to properties, plants, and equipment | (348) | (1,355) | (1,336)
Purchase of other companies, net of cash acquired | (3,931) |  |
Other investing activities, net | (29,383) | (748) |
Cash flows from financing activities: |  |  |
Dividends paid to stockholders | (4,419) | (4,291) | (4,099)
Payments on debt |  |  |
Other financing activity | (28,476) | 9,712 | (12,221)
Effect of exchange rate changes on cash |  |  |
Changes in cash and cash equivalents | 19,108 | (52,718) | 20,614
Cash and cash equivalents at beginning of year | 94,167 | 146,885 | 126,271
Cash and cash equivalents at end of year | 113,275 | 94,167 | 146,885
Cash flows from operating activities | 85,665 | (56,036) | 38,270
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |  |
Cash flows from operating activities | 82,778 | 101,254 | 61,900
Cash flows from investing activities: |  |  |
Additions to properties, plants, and equipment | (93,541) | (97,684) | (68,859)
Purchase of other companies, net of cash acquired |  |  |
Other investing activities, net | (896) | 637 | 417
Cash flows from financing activities: |  |  |
Dividends paid to stockholders |  |  |
Payments on debt | (10,174) | (12,405) | (9,137)
Other financing activity | 3,529 | 17,066 | 9,494
Effect of exchange rate changes on cash |  |  |
Changes in cash and cash equivalents | (18,304) | 8,868 | (6,185)
Cash and cash equivalents at beginning of year | 42,692 | 33,824 | 40,009
Cash and cash equivalents at end of year | 24,388 | 42,692 | 33,824
Cash flows from operating activities | 82,778 | 101,254 | 61,900
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |  |
Cash flows from operating activities | 76,491 | 63,856 | 58,277
Cash flows from investing activities: |  |  |
Additions to properties, plants, and equipment | (70,899) | (38,404) | (52,342)
Purchase of other companies, net of cash acquired |  |  |
Other investing activities, net | 333 | (1,052) | 3,765
Cash flows from financing activities: |  |  |
Dividends paid to stockholders |  |  |
Payments on debt | (982) | 1,554 |
Other financing activity | 8,895 | (31,408) | (22,856)
Effect of exchange rate changes on cash | (74) | (5,152) | (3,783)
Changes in cash and cash equivalents | 13,764 | (10,606) | (16,939)
Cash and cash equivalents at beginning of year | 18,350 | 28,956 | 45,895
Cash and cash equivalents at end of year | 32,114 | 18,350 | 28,956
Cash flows from operating activities | $ 76,491 | $ 63,856 | $ 58,277

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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=66902209&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 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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