Significant Customers & Geographical Information - Sales by Product and by Geographical Region (Detail) - USD ($) |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
Product Information [Line Items] | ||||
Total sales | $ 1,766,759 | $ 2,506,932 | $ 4,536,963 | $ 5,127,766 |
Instruments [Member] | ||||
Product Information [Line Items] | ||||
Total sales | 289,755 | 683,398 | 1,416,334 | 1,524,379 |
Handpieces [Member] | ||||
Product Information [Line Items] | ||||
Total sales | 1,430,141 | 1,784,982 | 3,076,655 | 3,518,197 |
Other [Member] | ||||
Product Information [Line Items] | ||||
Total sales | 46,863 | 38,552 | 43,974 | 85,190 |
United States [Member] | ||||
Product Information [Line Items] | ||||
Total sales | 841,614 | 1,181,374 | 1,709,176 | 2,395,018 |
Canada [Member] | ||||
Product Information [Line Items] | ||||
Total sales | 27,379 | 47,138 | 43,356 | 71,873 |
Other Foreign [Member] | ||||
Product Information [Line Items] | ||||
Total sales | $ 897,766 | $ 1,278,420 | $ 2,784,431 | $ 2,660,875 |