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Segment Information (Tables) | 3 Months Ended
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Mar. 31, 2018
Segment Reporting [Abstract] |
Schedule of reportable business segment information | Reportable business segment information is as follows (dollar amounts in thousands):
| Three Months Ended March 31,
| 2018 |  | 2017
Net sales: |  |  |  |  |
NSP Americas | $ | 41,872 |  |  | $ | 44,645 |
NSP Russia, Central and Eastern Europe | 9,551 |  |  | 8,446 |
Synergy WorldWide | 31,817 |  |  | 27,313 |
NSP China | 4,102 |  |  | 2,694 |
Total net sales | 87,342 |  |  | 83,098 |
Contribution margin (1): |  |  |  |  |
NSP Americas | 17,335 |  |  | 19,195 |
NSP Russia, Central and Eastern Europe | 3,204 |  |  | 2,924 |
Synergy WorldWide | 9,508 |  |  | 8,199 |
NSP China | 3,220 |  |  | 2,069 |
Total contribution margin | 33,267 |  |  | 32,387 |
Selling, general and administrative (2) | 32,386 |  |  | 30,336 |
Operating income | 881 |  |  | 2,051 |
Other income, net | 740 |  |  | 1,275 |
Income before provision for income taxes | $ | 1,621 |  |  | $ | 3,326 |
_________________________________________ (1) Contribution margin consists of net sales less cost of sales and volume incentives expense. (2) Service fees in the NSP China segment related sales in China, occurring after the Company's receipt of its direct selling license and pre-opening sales through Hong Kong, totaled $1.5 million and $0.9 million for the three-month periods ended March 31, 2018 and 2017, respectively. These service fees are included in the Company's selling, general and administrative expenses.
Schedule of consolidated net sales revenue by geographical locations | From an individual country perspective, only the United States and South Korea comprise 10 percent or more of consolidated net sales for the three-month periods ended March 31, 2018 and 2017, as follows (dollar amounts in thousands):
| Three Months Ended March 31,
| 2018 |  | 2017
Net sales: |  |  |  |  |
United States | $ | 35,227 |  |  | $ | 37,735 |
South Korea | 14,584 |  |  | 11,346 |
Other | 37,531 |  |  | 34,017 |
| $ | 87,342 |  |  | $ | 83,098 |
Schedule of revenue generated by each of the Company's product lines | Revenue generated by each of the Company’s product lines is set forth below (dollar amounts in thousands):
| Three Months Ended March 31,
| 2018 |  | 2017
NSP Americas: |  |  |  |  |
General health | $ | 17,746 |  |  | $ | 19,866 |
Immune | 5,544 |  |  | 5,073 |
Cardiovascular | 3,100 |  |  | 3,316 |
Digestive | 11,712 |  |  | 12,148 |
Personal care | 1,825 |  |  | 1,886 |
Weight management | 1,945 |  |  | 2,356 |
| 41,872 |  |  | 44,645 |
NSP Russia, Eastern and Central Europe: |  |  |  |  |
General health | $ | 4,131 |  |  | $ | 3,943 |
Immune | 1,029 |  |  | 862 |
Cardiovascular | 695 |  |  | 595 |
Digestive | 2,431 |  |  | 2,088 |
Personal care | 960 |  |  | 642 |
Weight management | 305 |  |  | 316 |
| 9,551 |  |  | 8,446 |
Synergy WorldWide: |  |  |  |  |
General health | $ | 8,640 |  |  | $ | 6,687 |
Immune | 149 |  |  | 121 |
Cardiovascular | 13,330 |  |  | 11,103 |
Digestive | 3,825 |  |  | 3,465 |
Personal care | 2,140 |  |  | 2,067 |
Weight management | 3,733 |  |  | 3,870 |
| 31,817 |  |  | 27,313 |
NSP China: |  |  |  |  |
General health | $ | 343 |  |  | $ | 495 |
Immune | 146 |  |  | 47 |
Cardiovascular | 561 |  |  | 517 |
Digestive | 2,456 |  |  | 1,431 |
Personal care | 253 |  |  | 42 |
Weight management | 343 |  |  | 162 |
| 4,102 |  |  | 2,694 |
| $ | 87,342 |  |  | $ | 83,098 |
Schedule of consolidated property, plant and equipment by geographical locations | From an individual country perspective, only the United States comprised 10 percent or more of consolidated property, plant and equipment as follows (dollar amounts in thousands):
| March 31, 2018 |  | December 31, 2017
Property, plant and equipment: |  |  |  |  |
United States | $ | 64,032 |  |  | $ | 65,928 |
Other | 3,062 |  |  | 3,178 |
Total property, plant and equipment | $ | 67,094 |  |  | $ | 69,106 |

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- Definition Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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