Annual report pursuant to Section 13 and 15(d)

Summary of significant accounting policies - Foreign Operations (Details)

v3.10.0.1
Summary of significant accounting policies - Foreign Operations (Details) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2017
Jun. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Segment Reporting Information [Line Items]                          
TOTAL ASSETS $ 3,593,829 $ 3,826,116 $ 3,949,367       $ 3,826,116   $ 3,593,829   $ 3,520,219 $ 4,204,479 $ 4,619,805
TOTAL LIABILITIES 9,139,926 8,571,991 8,409,169       8,571,991   9,139,926   10,921,161 8,333,688 9,748,921
Sales                     2,329 71,374 2,350
Net (Income) Loss- Total 1,057,225 842,473 688,847 $ 1,369,780 $ 3,403,316 $ 135,140 1,531,320 $ 3,538,456 2,588,545 $ 4,908,237 4,081,129 4,331,216 10,428,766
U.S. A.[Member]                          
Segment Reporting Information [Line Items]                          
TOTAL ASSETS 3,173,599 3,419,382 3,544,230       3,419,382   3,173,599   3,129,229 3,826,006 4,396,990
TOTAL LIABILITIES 7,436,598 7,276,959 7,215,005       7,276,959   7,436,598   9,145,727 7,106,868 9,540,657
Sales            
Net (Income) Loss- Total 659,291 523,802 514,918 1,014,831 2,967,092 (193,308) 1,038,720 2,773,784 1,698,011 3,788,616 2,637,634 2,464,389 9,720,192
Mexico[Member]                          
Segment Reporting Information [Line Items]                          
TOTAL ASSETS 74,648 69,565 70,156       69,565   74,648   3,355 94,147 172,170
TOTAL LIABILITIES 175,281 177,041 169,831       177,041   175,281   166,198 154,341 57,422
Sales             2,350
Net (Income) Loss- Total (343) 7,801 39,549 43,473 46,398 57,188 47,350 103,586 47,007 147,059 109,215 191,376 98,301
India[Member]                          
Segment Reporting Information [Line Items]                          
TOTAL ASSETS 344,547 335,924 333,543       335,924   344,547   386,789 243,570 50,645
TOTAL LIABILITIES 1,522,920 1,287,906 1,020,754       1,287,906   1,522,920   1,557,830 1,067,090 150,842
Sales 17 2,308 19,543 16,969 19,559 2,308 36,528 2,325 56,071 2,329 71,374
Net (Income) Loss- Total 395,743 305,114 116,952 310,103 379,709 271,260 422,066 650,969 817,809 961,072 1,276,203 1,415,001 610,273
Singapore[Member]                          
Segment Reporting Information [Line Items]                          
TOTAL ASSETS 1,035 1,245 1,438       1,245   1,035   846 40,756
TOTAL LIABILITIES 5,127 5,085 3,579       5,085   5,127   31,406 5,389
Sales                    
Net (Income) Loss- Total $ 2,534 $ 5,756 $ 17,428 $ 1,373 $ 10,117 $ 23,184 $ 10,117 $ 25,718 $ 11,490 $ 58,077 $ 260,450