v3.25.2
Shareholder Report, Line Graph (Details) - USD ($)
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended 15 Months Ended 18 Months Ended 21 Months Ended 24 Months Ended 27 Months Ended 30 Months Ended 33 Months Ended 36 Months Ended 39 Months Ended 42 Months Ended 45 Months Ended 48 Months Ended 51 Months Ended 54 Months Ended 57 Months Ended 60 Months Ended 63 Months Ended 66 Months Ended 69 Months Ended 72 Months Ended 75 Months Ended 78 Months Ended 81 Months Ended 84 Months Ended 87 Months Ended 90 Months Ended 93 Months Ended 96 Months Ended 99 Months Ended 102 Months Ended 105 Months Ended 108 Months Ended 111 Months Ended 114 Months Ended 117 Months Ended 120 Months Ended
Jun. 30, 2015
Sep. 30, 2015
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Mar. 31, 2017
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Guinness Atkinson Alternative Energy Fund                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 Alternative Energy Fund
Accumulated Value $ 10,000 $ 7,955 $ 8,608 $ 7,955 $ 7,501 $ 7,813 $ 7,131 $ 7,472 $ 7,784 $ 8,409 $ 8,605 $ 8,662 $ 8,320 $ 8,120 $ 7,272 $ 8,270 $ 8,670 $ 8,413 $ 9,468 $ 7,501 $ 10,067 $ 12,691 $ 17,653 $ 17,881 $ 18,680 $ 18,680 $ 19,136 $ 17,339 $ 14,915 $ 14,972 $ 16,711 $ 18,252 $ 18,081 $ 15,086 $ 16,313 $ 16,228 $ 15,715 $ 17,170 $ 14,382 $ 13,667 $ 16,126
Guinness Atkinson Asia Focus Fund                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 Asia Focus Fund
Accumulated Value 10,000 8,027 8,305 8,322 8,692 9,788 9,069 10,444 11,135 11,977 13,340 13,435 12,698 12,290 10,614 12,394 12,298 12,318 13,715 10,839 12,729 14,352 17,271 17,874 17,779 15,766 16,180 13,931 12,993 10,371 11,645 12,409 12,277 11,923 12,336 12,111 12,378 13,476 12,875 13,086 $ 14,732
Guinness Atkinson China & Hong Kong Fund                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 China & Hong Kong Fund
Accumulated Value 10,000 7,834 8,365 7,902 7,988 9,090 8,612 9,920 10,655 11,576 12,819 12,974 12,448 11,589 10,229 11,943 11,710 11,239 13,296 10,806 12,045 13,131 15,228 16,098 15,898 13,843 14,208 12,054 12,635 9,503 10,847 11,154 10,217 9,494 9,271 8,803 8,515 10,273 9,277 10,238 $ 10,362
Guinness Atkinson Global Energy Fund                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 Global Energy Fund
Accumulated Value 10,000 7,598 7,574 7,884 8,710 8,824 9,621 8,886 8,159 8,994 9,520 9,139 10,593 10,669 7,719 8,885 8,676 8,165 8,520 4,347 5,024 4,282 5,605 6,891 7,592 7,894 8,183 9,960 9,448 9,097 10,992 10,581 10,511 11,870 11,278 12,427 12,427 11,689 11,085 12,102 $ 11,674
Guinness Atkinson Global Innovators Fund | Investor Class                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 Global Innovators Fund - Investor Class
Accumulated Value 10,000 9,036 9,719 9,672 9,491 10,417 10,643 11,631 12,410 13,497 14,341 14,494 14,377 14,329 11,932 14,069 14,463 14,726 16,346 13,701 17,450 19,383 22,260 23,190 25,467 24,902 27,051 23,851 19,145 17,479 19,023 22,008 24,006 23,293 26,505 29,725 31,369 32,157 31,684 30,569 $ 34,952
Guinness Atkinson Global Innovators Fund | Institutional Class                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 Global Innovators Fund - Institutional Class
Accumulated Value 10,000 9,036 9,719 9,679 9,503 10,439 10,673 11,668 12,456 13,558 14,414 14,577 14,465 14,426 12,023 14,184 14,590 14,864 16,514 13,846 17,650 19,613 22,535 23,493 25,814 25,259 27,462 24,224 19,462 17,774 19,356 22,409 24,459 23,750 27,041 30,349 32,048 32,869 32,405 31,290 $ 35,796
Guinness Atkinson Alternative Energy Fund | MSCI World Index (Net Return)                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 MSCI World Index (Net Return)
Accumulated Value 10,000 9,155 9,659 9,625 9,722 10,195 10,384 11,046 11,491 12,047 12,710 12,547 12,765 13,401 11,603 13,051 13,573 13,646 14,814 11,695 13,959 15,066 17,169 18,014 19,409 19,408 20,915 19,837 16,627 15,598 17,121 18,444 19,704 19,022 21,193 23,076 23,683 25,190 25,151 24,700 $ 27,533
Guinness Atkinson Asia Focus Fund | MSCI AC Far East ex Japan Index (Net Return)                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 MSCI AC Far East ex Japan Index (Net Return)
Accumulated Value 10,000 8,192 8,551 8,743 8,747 9,676 9,082 10,260 11,180 11,971 12,911 13,106 12,338 12,153 10,956 12,266 12,167 11,628 13,087 10,871 12,648 13,943 16,495 16,893 17,434 15,321 15,106 13,748 12,622 10,452 11,848 12,609 12,158 11,601 12,204 12,386 13,177 14,675 13,719 14,149 $ 16,036
Guinness Atkinson China & Hong Kong Fund | MSCI China Index (Net Return)                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 MSCI China Index (Net Return)
Accumulated Value 10,000 7,729 8,040 7,654 7,663 8,729 8,112 9,160 10,129 11,613 12,498 12,725 12,280 11,358 10,139 11,932 11,453 10,912 12,517 11,238 12,957 14,576 16,209 16,140 16,506 13,507 12,688 10,888 11,259 8,726 9,906 10,372 9,365 9,184 8,797 8,604 9,214 11,378 10,505 12,083 $ 12,326
Guinness Atkinson Global Energy Fund | MSCI World Index (Net Return)                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 MSCI World Index (Net Return)
Accumulated Value 10,000 9,155 9,659 9,625 9,722 10,195 10,384 11,046 11,491 12,047 12,710 12,547 12,765 13,401 11,603 13,051 13,573 13,646 14,814 11,695 13,959 15,066 17,169 18,014 19,409 19,408 20,915 19,837 16,627 15,598 17,121 18,444 19,704 19,022 21,193 23,076 23,683 25,190 25,151 24,700 $ 27,533
Guinness Atkinson Global Innovators Fund | Investor Class | MSCI World Index (Net Return)                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 MSCI World Index (Net Return)
Accumulated Value 10,000 9,155 9,659 9,625 9,722 10,195 10,384 11,046 11,491 12,047 12,710 12,547 12,765 13,401 11,603 13,051 13,573 13,646 14,814 11,695 13,959 15,066 17,169 18,014 19,409 19,408 20,915 19,837 16,627 15,598 17,121 18,444 19,704 19,022 21,193 23,076 23,683 25,190 25,151 24,700 $ 27,533
Guinness Atkinson Global Innovators Fund | Institutional Class | MSCI World Index (Net Return)                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 MSCI World Index (Net Return)
Accumulated Value 10,000 9,155 9,659 9,625 9,722 10,195 10,384 11,046 11,491 12,047 12,710 12,547 12,765 13,401 11,603 13,051 13,573 13,646 14,814 11,695 13,959 15,066 17,169 18,014 19,409 19,408 20,915 19,837 16,627 15,598 17,121 18,444 19,704 19,022 21,193 23,076 23,683 25,190 25,151 24,700 $ 27,533
Guinness Atkinson Global Energy Fund | MSCI World Energy Index (Net Return)                                                                                  
Account Value [Line Items]                                                                                  
Line Graph and Table Measure Name                                                                                 MSCI World Energy Index (Net Return)
Accumulated Value $ 10,000 $ 8,192 $ 8,133 $ 8,550 $ 9,453 $ 9,587 $ 10,294 $ 9,784 $ 9,300 $ 10,131 $ 10,805 $ 10,221 $ 11,520 $ 11,610 $ 9,094 $ 10,408 $ 10,245 $ 9,653 $ 10,135 $ 5,596 $ 6,522 $ 5,481 $ 6,946 $ 8,459 $ 9,194 $ 9,315 $ 9,731 $ 12,714 $ 12,063 $ 11,889 $ 14,209 $ 13,723 $ 13,653 $ 15,189 $ 14,569 $ 15,990 $ 15,777 $ 15,397 $ 14,962 $ 16,471 $ 15,644