Note 16 - Transactions With Affiliate (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Revenue from Contract with Customer, Including Assessed Tax | $ 438,951 | $ 442,395 | $ 456,328 | $ 454,116 | $ 446,632 | $ 431,795 | $ 352,693 | $ 331,354 | $ 1,791,790 | $ 1,562,474 | $ 1,312,661 |
| Gross Profit, Total | $ 121,920 | $ 126,154 | $ 126,476 | $ 108,333 | $ 85,640 | $ 82,103 | $ 77,273 | $ 73,846 | 482,883 | 318,862 | 284,755 |
| Kyocera Resale Products [Member] | |||||||||||
| Revenue from Contract with Customer, Including Assessed Tax | 18,951 | 296,316 | 318,928 | ||||||||
| Gross Profit, Total | $ 3,300 | $ 18,177 | $ 17,076 | ||||||||