Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-22-005052-index-headers.html | 2022-03-30 16:16:43 | |
| 0000950170-22-005052-index.html | 2022-03-30 16:16:43 | |
| 0000950170-22-005052.txt | 2022-03-30 16:16:43 | |
 0000950170-22-005052-xbrl.zip | 701521 | 2022-03-30 16:16:43 |
| FilingSummary.xml | 62573 | 2022-03-30 16:16:43 |
| Financial_Report.xlsx | 159097 | 2022-03-30 16:16:43 |
 img174010467_0.jpg | 84613 | 2022-03-30 16:16:43 |
 img174010467_1.jpg | 44012 | 2022-03-30 16:16:43 |
 img219665885_0.jpg | 56648 | 2022-03-30 16:16:43 |
 img219665885_1.jpg | 127296 | 2022-03-30 16:16:43 |
 img219665885_10.jpg | 145897 | 2022-03-30 16:16:43 |
 img219665885_2.jpg | 119333 | 2022-03-30 16:16:43 |
 img219665885_3.jpg | 116664 | 2022-03-30 16:16:43 |
 img219665885_4.jpg | 20283 | 2022-03-30 16:16:43 |
 img219665885_5.jpg | 37330 | 2022-03-30 16:16:43 |
 img219665885_6.jpg | 27997 | 2022-03-30 16:16:43 |
 img219665885_7.jpg | 39930 | 2022-03-30 16:16:43 |
 img219665885_8.jpg | 167002 | 2022-03-30 16:16:43 |
 img219665885_9.jpg | 137422 | 2022-03-30 16:16:43 |
 img254008995_0.jpg | 7046 | 2022-03-30 16:16:43 |
 img254008995_1.jpg | 7046 | 2022-03-30 16:16:43 |
 img254008995_2.jpg | 7046 | 2022-03-30 16:16:43 |
| MetaLinks.json | 1194928 | 2022-03-30 16:16:43 |
| R1.htm | 80089 | 2022-03-30 16:16:43 |
| R10.htm | 224620 | 2022-03-30 16:16:43 |
| R11.htm | 62625 | 2022-03-30 16:16:43 |
| R12.htm | 112727 | 2022-03-30 16:16:43 |
| R13.htm | 104890 | 2022-03-30 16:16:43 |
| R14.htm | 120807 | 2022-03-30 16:16:43 |
| R15.htm | 80544 | 2022-03-30 16:16:43 |
| R16.htm | 81079 | 2022-03-30 16:16:43 |
| R17.htm | 16171 | 2022-03-30 16:16:43 |
| R18.htm | 275446 | 2022-03-30 16:16:43 |
| R19.htm | 47610 | 2022-03-30 16:16:43 |
| R2.htm | 118180 | 2022-03-30 16:16:43 |
| R20.htm | 134760 | 2022-03-30 16:16:43 |
| R21.htm | 38274 | 2022-03-30 16:16:43 |
| R22.htm | 198050 | 2022-03-30 16:16:43 |
| R23.htm | 65070 | 2022-03-30 16:16:43 |
| R24.htm | 284953 | 2022-03-30 16:16:43 |
| R25.htm | 95719 | 2022-03-30 16:16:43 |
| R26.htm | 38580 | 2022-03-30 16:16:43 |
| R27.htm | 148890 | 2022-03-30 16:16:43 |
| R28.htm | 91881 | 2022-03-30 16:16:43 |
| R29.htm | 119401 | 2022-03-30 16:16:43 |
| R3.htm | 37414 | 2022-03-30 16:16:43 |
| R30.htm | 77944 | 2022-03-30 16:16:43 |
| R31.htm | 42634 | 2022-03-30 16:16:43 |
| R32.htm | 273604 | 2022-03-30 16:16:43 |
| R33.htm | 40150 | 2022-03-30 16:16:43 |
| R34.htm | 125102 | 2022-03-30 16:16:43 |
| R35.htm | 182773 | 2022-03-30 16:16:43 |
| R36.htm | 64908 | 2022-03-30 16:16:43 |
| R37.htm | 9023 | 2022-03-30 16:16:43 |
| R38.htm | 118368 | 2022-03-30 16:16:43 |
| R39.htm | 11700 | 2022-03-30 16:16:43 |
| R4.htm | 75132 | 2022-03-30 16:16:43 |
| R40.htm | 28709 | 2022-03-30 16:16:43 |
| R41.htm | 37487 | 2022-03-30 16:16:43 |
| R42.htm | 18725 | 2022-03-30 16:16:43 |
| R43.htm | 87126 | 2022-03-30 16:16:43 |
| R44.htm | 29245 | 2022-03-30 16:16:43 |
| R45.htm | 39281 | 2022-03-30 16:16:43 |
| R46.htm | 20097 | 2022-03-30 16:16:43 |
| R47.htm | 29322 | 2022-03-30 16:16:43 |
| R48.htm | 41364 | 2022-03-30 16:16:43 |
| R49.htm | 15292 | 2022-03-30 16:16:43 |
| R5.htm | 22507 | 2022-03-30 16:16:43 |
| R50.htm | 7090 | 2022-03-30 16:16:43 |
| R51.htm | 17779 | 2022-03-30 16:16:43 |
| R52.htm | 49520 | 2022-03-30 16:16:43 |
| R53.htm | 27584 | 2022-03-30 16:16:43 |
| R54.htm | 9698 | 2022-03-30 16:16:43 |
| R55.htm | 9789 | 2022-03-30 16:16:43 |
| R56.htm | 10831 | 2022-03-30 16:16:43 |
| R57.htm | 14371 | 2022-03-30 16:16:43 |
| R58.htm | 15786 | 2022-03-30 16:16:43 |
| R59.htm | 35044 | 2022-03-30 16:16:43 |
| R6.htm | 93362 | 2022-03-30 16:16:43 |
| R60.htm | 11564 | 2022-03-30 16:16:43 |
| R61.htm | 11431 | 2022-03-30 16:16:43 |
| R62.htm | 22101 | 2022-03-30 16:16:43 |
| R63.htm | 29044 | 2022-03-30 16:16:43 |
| R64.htm | 21844 | 2022-03-30 16:16:43 |
| R65.htm | 20280 | 2022-03-30 16:16:43 |
| R66.htm | 204273 | 2022-03-30 16:16:43 |
| R67.htm | 46226 | 2022-03-30 16:16:43 |
| R68.htm | 24930 | 2022-03-30 16:16:43 |
| R69.htm | 35957 | 2022-03-30 16:16:43 |
| R7.htm | 4421 | 2022-03-30 16:16:43 |
| R70.htm | 20781 | 2022-03-30 16:16:43 |
| R71.htm | 6265 | 2022-03-30 16:16:43 |
| R72.htm | 11621 | 2022-03-30 16:16:43 |
| R73.htm | 39018 | 2022-03-30 16:16:43 |
| R74.htm | 17487 | 2022-03-30 16:16:43 |
| R75.htm | 19617 | 2022-03-30 16:16:43 |
| R76.htm | 13980 | 2022-03-30 16:16:43 |
| R77.htm | 46726 | 2022-03-30 16:16:43 |
| R78.htm | 40935 | 2022-03-30 16:16:43 |
| R79.htm | 24662 | 2022-03-30 16:16:43 |
| R8.htm | 124471 | 2022-03-30 16:16:43 |
| R80.htm | 14359 | 2022-03-30 16:16:43 |
| R81.htm | 17089 | 2022-03-30 16:16:43 |
| R82.htm | 87227 | 2022-03-30 16:16:43 |
| R83.htm | 12230 | 2022-03-30 16:16:43 |
| R84.htm | 29921 | 2022-03-30 16:16:43 |
| R85.htm | 25735 | 2022-03-30 16:16:43 |
| R86.htm | 32394 | 2022-03-30 16:16:43 |
| R87.htm | 42839 | 2022-03-30 16:16:43 |
| R88.htm | 13836 | 2022-03-30 16:16:43 |
| R89.htm | 22474 | 2022-03-30 16:16:43 |
| R9.htm | 10557 | 2022-03-30 16:16:43 |
| report.css | 2768 | 2022-03-30 16:16:43 |
| Show.js | 1086 | 2022-03-30 16:16:43 |
| spir-20211231.htm | 4622554 | 2022-03-30 16:16:43 |
| spir-20211231.xsd | 119072 | 2022-03-30 16:16:43 |
| spir-20211231_cal.xml | 97377 | 2022-03-30 16:16:43 |
| spir-20211231_def.xml | 504253 | 2022-03-30 16:16:43 |
| spir-20211231_htm.xml | 3674897 | 2022-03-30 16:16:43 |
| spir-20211231_lab.xml | 930728 | 2022-03-30 16:16:43 |
| spir-20211231_pre.xml | 752405 | 2022-03-30 16:16:43 |
| spir-ex10_15.htm | 874219 | 2022-03-30 16:16:43 |
| spir-ex10_6.htm | 141219 | 2022-03-30 16:16:43 |
| spir-ex21_1.htm | 17271 | 2022-03-30 16:16:43 |
| spir-ex23_1.htm | 3618 | 2022-03-30 16:16:43 |
| spir-ex31_1.htm | 31835 | 2022-03-30 16:16:43 |
| spir-ex31_2.htm | 31832 | 2022-03-30 16:16:43 |
| spir-ex32_1.htm | 17330 | 2022-03-30 16:16:43 |
| spir-ex4_3.htm | 211983 | 2022-03-30 16:16:43 |