9. Industry Segment and Geographic Information (Details - Revenues by product line ) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Revenue from External Customer [Line Items] | |||||||||||
| Revenues | $ 32,372 | $ 37,381 | $ 37,655 | $ 38,324 | $ 32,693 | $ 36,625 | $ 35,025 | $ 36,419 | $ 145,733 | $ 140,762 | $ 131,993 |
| Fluid Delivery [Member] | |||||||||||
| Revenue from External Customer [Line Items] | |||||||||||
| Revenues | 60,630 | 57,905 | 51,289 | ||||||||
| Cardiovascular [Member] | |||||||||||
| Revenue from External Customer [Line Items] | |||||||||||
| Revenues | 46,463 | 43,001 | 40,182 | ||||||||
| Ophthalmology [Member] | |||||||||||
| Revenue from External Customer [Line Items] | |||||||||||
| Revenues | 18,253 | 19,329 | 20,736 | ||||||||
| Other Products [Member] | |||||||||||
| Revenue from External Customer [Line Items] | |||||||||||
| Revenues | $ 20,387 | $ 20,527 | $ 19,786 | ||||||||