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 0001130464-20-000040-index-headers.html | 2020-11-02 16:54:07 | |
| 0001130464-20-000040-index.html | 2020-11-02 16:54:07 | |
| 0001130464-20-000040.txt | 2020-11-02 16:54:07 | |
 0001130464-20-000040-xbrl.zip | 37227 | 2020-11-02 16:54:07 |
 bhcreadyorangeblacka011a.jpg | 33146 | 2020-11-02 16:54:07 |
| bkh-20201102.htm | 29724 | 2020-11-02 16:54:07 |
| bkh-20201102.xsd | 2831 | 2020-11-02 16:54:07 |
| bkh-20201102_cal.xml | 874 | 2020-11-02 16:54:07 |
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| bkh-20201102_htm.xml | 10586 | 2020-11-02 16:54:07 |
| bkh-20201102_lab.xml | 24572 | 2020-11-02 16:54:07 |
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| ex-99q32020earningsrel.htm | 475672 | 2020-11-02 16:54:07 |
| FilingSummary.xml | 1886 | 2020-11-02 16:54:07 |
| Financial_Report.xlsx | 5458 | 2020-11-02 16:54:07 |
| MetaLinks.json | 18710 | 2020-11-02 16:54:07 |
| R1.htm | 38689 | 2020-11-02 16:54:07 |
| report.css | 2767 | 2020-11-02 16:54:07 |
| Show.js | 1085 | 2020-11-02 16:54:07 |