Annual report pursuant to Section 13 and 15(d)

Geographic and Other Financial Information (Unaudited) (Detail)

v3.8.0.1
Geographic and Other Financial Information (Unaudited) (Detail) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Sales Revenue Net $ 1,597 $ 1,405 $ 1,325 $ 1,211 $ 620 $ 583 $ 561 $ 364 $ 5,537,753 $ 2,127,378 $ 2,749,984
Geographic Concentration Risk 1 [Member]                      
Sales Revenue Net                 $ 5,538 $ 2,127 $ 2,750
Concentration Risk, Percentage                 100.00% 100.00% 100.00%
Geographic Concentration Risk 2 [Member]                      
Sales Revenue Net                 $ 5,538 $ 2,127 $ 2,750
Concentration Risk, Percentage                 100.00% 100.00% 100.00%
Asia Pacific [Member] | Geographic Concentration Risk 1 [Member]                      
Sales Revenue Net                 $ 1,927 $ 493 $ 250
Concentration Risk, Percentage                 35.00% 23.00% 9.00%
Europe [Member] | Geographic Concentration Risk 1 [Member]                      
Sales Revenue Net                 $ 1,892 $ 649 $ 334
Concentration Risk, Percentage                 34.00% 31.00% 12.00%
North America [Member] | Geographic Concentration Risk 1 [Member]                      
Sales Revenue Net                 $ 1,687 $ 981 $ 2,161
Concentration Risk, Percentage                 30.00% 46.00% 79.00%
Other Continent [Member] | Geographic Concentration Risk 1 [Member]                      
Sales Revenue Net                 $ 32 $ 4 $ 5
Concentration Risk, Percentage                 1.00% 0.00% 0.00%
Other Continent [Member] | Geographic Concentration Risk 2 [Member]                      
Sales Revenue Net                 $ 1,096 $ 357 $ 181
Concentration Risk, Percentage                 20.00% 17.00% 6.00%
UNITED STATES | Geographic Concentration Risk 2 [Member]                      
Sales Revenue Net                 $ 1,618 $ 962 $ 2,147
Concentration Risk, Percentage                 29.00% 45.00% 78.00%
FRANCE | Geographic Concentration Risk 2 [Member]                      
Sales Revenue Net                 $ 429 $ 211 $ 44
Concentration Risk, Percentage                 8.00% 10.00% 2.00%
JAPAN | Geographic Concentration Risk 2 [Member]                      
Sales Revenue Net                 $ 1,340 $ 288 $ 217
Concentration Risk, Percentage                 24.00% 14.00% 8.00%
GERMANY | Geographic Concentration Risk 2 [Member]                      
Sales Revenue Net                 $ 526 $ 263 $ 129
Concentration Risk, Percentage                 9.00% 12.00% 5.00%
UNITED KINGDOM | Geographic Concentration Risk 2 [Member]                      
Sales Revenue Net                 $ 529 $ 46 $ 32
Concentration Risk, Percentage                 10.00% 2.00% 1.00%