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Note 14 - Guarantor Subsidiaries - Unaudited Interim Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Cash flows from operating activities | $ 20,030 | $ 16,383
Additions to properties, plants, and equipment | (33,071) | (17,635)
Other investing activities, net | 1 | (530)
Dividends paid to stockholders | (1,348) | (1,136)
Borrowings on debt | 58,000 | 31,024
Payments on debt | (59,261) | (1,322)
Other financing activity | (38) | (1,225)
Effect of exchange rate changes on cash | 95 | 876
Changes in cash, cash equivalents and restricted cash and cash equivalents | (15,592) | 26,435
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period | 28,414 | 187,139
Cash, cash equivalents and restricted cash and cash equivalents at end of period | 12,822 | 213,574
Reportable Legal Entities [Member] | Parent Company [Member] |  |
Cash flows from operating activities | (38,879) | 21,183
Additions to properties, plants, and equipment |  |
Other investing activities, net | 23,116 | (16,260)
Dividends paid to stockholders | (1,348) | (1,136)
Borrowings on debt | 58,000 |
Payments on debt | (58,000) |
Other financing activity | 14,247 | (1,186)
Effect of exchange rate changes on cash |  |
Changes in cash, cash equivalents and restricted cash and cash equivalents | (2,864) | 33,625
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period | 6,265 | 103,878
Cash, cash equivalents and restricted cash and cash equivalents at end of period | 3,401 | 137,503
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member] |  |
Cash flows from operating activities | 36,481 | 18,747
Additions to properties, plants, and equipment | (25,401) | (8,082)
Other investing activities, net | (1) | 151
Dividends paid to stockholders |  |
Borrowings on debt |  |
Payments on debt | (746) | (644)
Other financing activity | (15,725) | (20,118)
Effect of exchange rate changes on cash |  |
Changes in cash, cash equivalents and restricted cash and cash equivalents | (5,392) | (9,946)
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period | 9,686 | 32,048
Cash, cash equivalents and restricted cash and cash equivalents at end of period | 4,294 | 22,102
Reportable Legal Entities [Member] | Non-Guarantor Subsidiaries [Member] |  |
Cash flows from operating activities | (17,553) | 13,396
Additions to properties, plants, and equipment | (7,670) | (9,553)
Other investing activities, net | 2 |
Dividends paid to stockholders |  |
Borrowings on debt |  |
Payments on debt | (515) | (678)
Other financing activity | 18,305 | (1,285)
Effect of exchange rate changes on cash | 95 | 876
Changes in cash, cash equivalents and restricted cash and cash equivalents | (7,336) | 2,756
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period | 12,463 | 51,213
Cash, cash equivalents and restricted cash and cash equivalents at end of period | 5,127 | 53,969
Consolidation, Eliminations [Member] |  |
Cash flows from operating activities | 39,981 | (36,943)
Additions to properties, plants, and equipment |  |
Other investing activities, net | (23,116) | 15,579
Dividends paid to stockholders |  |
Borrowings on debt |  |
Payments on debt |  |
Other financing activity | (16,865) | 21,364
Effect of exchange rate changes on cash |  |
Changes in cash, cash equivalents and restricted cash and cash equivalents |  |
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period |  |
Cash, cash equivalents and restricted cash and cash equivalents at end of period |  |

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585 + Details
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- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 + Details
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