Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000018349-23-000061-index-headers.html | 2023-02-24 09:23:18 | |
| 0000018349-23-000061-index.html | 2023-02-24 09:23:18 | |
| 0000018349-23-000061.txt | 2023-02-24 09:23:18 | |
 0000018349-23-000061-xbrl.zip | 940610 | 2023-02-24 09:23:18 |
| FilingSummary.xml | 74003 | 2023-02-24 09:23:18 |
| Financial_Report.xlsx | 264173 | 2023-02-24 09:23:18 |
| MetaLinks.json | 1471662 | 2023-02-24 09:23:18 |
| R1.htm | 72980 | 2023-02-24 09:23:18 |
| R10.htm | 113094 | 2023-02-24 09:23:18 |
| R100.htm | 12248 | 2023-02-24 09:23:18 |
| R101.htm | 25629 | 2023-02-24 09:23:18 |
| R102.htm | 28874 | 2023-02-24 09:23:18 |
| R103.htm | 52658 | 2023-02-24 09:23:18 |
| R104.htm | 11785 | 2023-02-24 09:23:18 |
| R105.htm | 20490 | 2023-02-24 09:23:18 |
| R106.htm | 22389 | 2023-02-24 09:23:18 |
| R107.htm | 15055 | 2023-02-24 09:23:18 |
| R108.htm | 51339 | 2023-02-24 09:23:18 |
| R109.htm | 78056 | 2023-02-24 09:23:18 |
| R11.htm | 188104 | 2023-02-24 09:23:18 |
| R110.htm | 50038 | 2023-02-24 09:23:18 |
| R111.htm | 28160 | 2023-02-24 09:23:18 |
| R112.htm | 70055 | 2023-02-24 09:23:18 |
| R113.htm | 16071 | 2023-02-24 09:23:18 |
| R12.htm | 766568 | 2023-02-24 09:23:18 |
| R13.htm | 19808 | 2023-02-24 09:23:18 |
| R14.htm | 49215 | 2023-02-24 09:23:18 |
| R15.htm | 26481 | 2023-02-24 09:23:18 |
| R16.htm | 24990 | 2023-02-24 09:23:18 |
| R17.htm | 60924 | 2023-02-24 09:23:18 |
| R18.htm | 117131 | 2023-02-24 09:23:18 |
| R19.htm | 60756 | 2023-02-24 09:23:18 |
| R2.htm | 7789 | 2023-02-24 09:23:18 |
| R20.htm | 25060 | 2023-02-24 09:23:18 |
| R21.htm | 355127 | 2023-02-24 09:23:18 |
| R22.htm | 133802 | 2023-02-24 09:23:18 |
| R23.htm | 36511 | 2023-02-24 09:23:18 |
| R24.htm | 89692 | 2023-02-24 09:23:18 |
| R25.htm | 111756 | 2023-02-24 09:23:18 |
| R26.htm | 104902 | 2023-02-24 09:23:18 |
| R27.htm | 115913 | 2023-02-24 09:23:18 |
| R28.htm | 6433 | 2023-02-24 09:23:18 |
| R29.htm | 162454 | 2023-02-24 09:23:18 |
| R3.htm | 102533 | 2023-02-24 09:23:18 |
| R30.htm | 18066 | 2023-02-24 09:23:18 |
| R31.htm | 190571 | 2023-02-24 09:23:18 |
| R32.htm | 752883 | 2023-02-24 09:23:18 |
| R33.htm | 17570 | 2023-02-24 09:23:18 |
| R34.htm | 53949 | 2023-02-24 09:23:18 |
| R35.htm | 25308 | 2023-02-24 09:23:18 |
| R36.htm | 24399 | 2023-02-24 09:23:18 |
| R37.htm | 62816 | 2023-02-24 09:23:18 |
| R38.htm | 113410 | 2023-02-24 09:23:18 |
| R39.htm | 56814 | 2023-02-24 09:23:18 |
| R4.htm | 21062 | 2023-02-24 09:23:18 |
| R40.htm | 23748 | 2023-02-24 09:23:18 |
| R41.htm | 362923 | 2023-02-24 09:23:18 |
| R42.htm | 124024 | 2023-02-24 09:23:18 |
| R43.htm | 23064 | 2023-02-24 09:23:18 |
| R44.htm | 88017 | 2023-02-24 09:23:18 |
| R45.htm | 115084 | 2023-02-24 09:23:18 |
| R46.htm | 95355 | 2023-02-24 09:23:18 |
| R47.htm | 117853 | 2023-02-24 09:23:18 |
| R48.htm | 43953 | 2023-02-24 09:23:18 |
| R49.htm | 37762 | 2023-02-24 09:23:18 |
| R5.htm | 121605 | 2023-02-24 09:23:18 |
| R50.htm | 14694 | 2023-02-24 09:23:18 |
| R51.htm | 47638 | 2023-02-24 09:23:18 |
| R52.htm | 70886 | 2023-02-24 09:23:18 |
| R53.htm | 8822 | 2023-02-24 09:23:18 |
| R54.htm | 107623 | 2023-02-24 09:23:18 |
| R55.htm | 58201 | 2023-02-24 09:23:18 |
| R56.htm | 305612 | 2023-02-24 09:23:18 |
| R57.htm | 39121 | 2023-02-24 09:23:18 |
| R58.htm | 73463 | 2023-02-24 09:23:18 |
| R59.htm | 21358 | 2023-02-24 09:23:18 |
| R6.htm | 129809 | 2023-02-24 09:23:18 |
| R60.htm | 13395 | 2023-02-24 09:23:18 |
| R61.htm | 23518 | 2023-02-24 09:23:18 |
| R62.htm | 16544 | 2023-02-24 09:23:18 |
| R63.htm | 14918 | 2023-02-24 09:23:18 |
| R64.htm | 13249 | 2023-02-24 09:23:18 |
| R65.htm | 32761 | 2023-02-24 09:23:18 |
| R66.htm | 9636 | 2023-02-24 09:23:18 |
| R67.htm | 28894 | 2023-02-24 09:23:18 |
| R68.htm | 9607 | 2023-02-24 09:23:18 |
| R69.htm | 13138 | 2023-02-24 09:23:18 |
| R7.htm | 63609 | 2023-02-24 09:23:18 |
| R70.htm | 66861 | 2023-02-24 09:23:18 |
| R71.htm | 27829 | 2023-02-24 09:23:18 |
| R72.htm | 5257 | 2023-02-24 09:23:18 |
| R73.htm | 13112 | 2023-02-24 09:23:18 |
| R74.htm | 45614 | 2023-02-24 09:23:18 |
| R75.htm | 25088 | 2023-02-24 09:23:18 |
| R76.htm | 16867 | 2023-02-24 09:23:18 |
| R77.htm | 40356 | 2023-02-24 09:23:18 |
| R78.htm | 64876 | 2023-02-24 09:23:18 |
| R79.htm | 42579 | 2023-02-24 09:23:18 |
| R8.htm | 8069 | 2023-02-24 09:23:18 |
| R80.htm | 4940 | 2023-02-24 09:23:18 |
| R81.htm | 114382 | 2023-02-24 09:23:18 |
| R82.htm | 10521 | 2023-02-24 09:23:18 |
| R83.htm | 47699 | 2023-02-24 09:23:18 |
| R84.htm | 30982 | 2023-02-24 09:23:18 |
| R85.htm | 28896 | 2023-02-24 09:23:18 |
| R86.htm | 33185 | 2023-02-24 09:23:18 |
| R87.htm | 96437 | 2023-02-24 09:23:18 |
| R88.htm | 22665 | 2023-02-24 09:23:18 |
| R89.htm | 40877 | 2023-02-24 09:23:18 |
| R9.htm | 116817 | 2023-02-24 09:23:18 |
| R90.htm | 43559 | 2023-02-24 09:23:18 |
| R91.htm | 15053 | 2023-02-24 09:23:18 |
| R92.htm | 21880 | 2023-02-24 09:23:18 |
| R93.htm | 23862 | 2023-02-24 09:23:18 |
| R94.htm | 33170 | 2023-02-24 09:23:18 |
| R95.htm | 49431 | 2023-02-24 09:23:18 |
| R96.htm | 11068 | 2023-02-24 09:23:18 |
| R97.htm | 28652 | 2023-02-24 09:23:18 |
| R98.htm | 11000 | 2023-02-24 09:23:18 |
| R99.htm | 33827 | 2023-02-24 09:23:18 |
| R9999.htm | 23011 | 2023-02-24 09:23:18 |
| report.css | 2768 | 2023-02-24 09:23:18 |
| Show.js | 1086 | 2023-02-24 09:23:18 |
| snv_12312022xfilingxex1047.htm | 67674 | 2023-02-24 09:23:18 |
| snv_12312022xfilingxex1050.htm | 69042 | 2023-02-24 09:23:18 |
| snv_12312022xfilingxex14.htm | 57970 | 2023-02-24 09:23:18 |
| snv_12312022xfilingxex211.htm | 60806 | 2023-02-24 09:23:18 |
| snv_12312022xfilingxex231.htm | 2235 | 2023-02-24 09:23:18 |
| snv_12312022xfilingxex311.htm | 10975 | 2023-02-24 09:23:18 |
| snv_12312022xfilingxex312.htm | 11016 | 2023-02-24 09:23:18 |
| snv_12312022xfilingxex32.htm | 7708 | 2023-02-24 09:23:18 |
| syn-20221231.htm | 7467450 | 2023-02-24 09:23:18 |
| syn-20221231.xsd | 118717 | 2023-02-24 09:23:18 |
| syn-20221231_cal.xml | 195691 | 2023-02-24 09:23:18 |
| syn-20221231_def.xml | 701434 | 2023-02-24 09:23:18 |
 syn-20221231_g1.jpg | 88003 | 2023-02-24 09:23:18 |
| syn-20221231_htm.xml | 7963125 | 2023-02-24 09:23:18 |
| syn-20221231_lab.xml | 1413241 | 2023-02-24 09:23:18 |
| syn-20221231_pre.xml | 1034972 | 2023-02-24 09:23:18 |