Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area | The Company’s net sales by geographic area are as follows (in thousands): | | | | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | Net sales from external customers: | | | | | | United States | $ | 4,100 |
| | $ | 3,246 |
| | $ | 1,438 |
| Canada | 1,809 |
| | 2,746 |
| | 1,374 |
| Hong Kong | 263,482 |
| | 245,737 |
| | 111,028 |
| China | 9,086 |
| | 4,425 |
| | 1,538 |
| Taiwan | 6,213 |
| | 5,965 |
| | 4,628 |
| South Korea | 691 |
| | 1,129 |
| | 1,009 |
| Commonwealth of Independent States (Russia, Kazakhstan and Ukraine)1 | 858 |
| | 1,139 |
| | 3,113 |
| Europe | 1,234 |
| | 382 |
| | 373 |
| Other foreign countries | 255 |
| | 91 |
| | 89 |
| Total net sales | $ | 287,728 |
| | $ | 264,860 |
| | $ | 124,590 |
|
|
Schedule of Segment Reporting Information, by Segment | The Company’s net sales by product and service are as follows (in thousands): | | | | | | | | | | | | | | Year Ended December 31, | | 2016 | | 2015 | | 2014 | Net sales by product and service: | | | | | | Product sales | $ | 269,731 |
| | $ | 253,041 |
| | $ | 118,843 |
| Enrollment package revenue, freight and other | 25,616 |
| | 17,623 |
| | 7,927 |
| Less: sales returns | (7,619 | ) | | (5,804 | ) | | (2,180 | ) | Total net sales | $ | 287,728 |
| | $ | 264,860 |
| | $ | 124,590 |
|
|
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country | The Company’s long-lived assets by geographic area are as follows (in thousands): | | | | | | | | | | December 31, | | 2016 | | 2015 | Long-lived assets: | | | | United States | $ | 763 |
| | $ | 283 |
| Hong Kong | 140 |
| | 204 |
| China | 199 |
| | 252 |
| Other foreign countries | 286 |
| | 155 |
| Total long-lived assets | $ | 1,388 |
| | $ | 894 |
|
|