XML 23 R7.htm IDEA: XBRL DOCUMENT
v3.20.2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (Parenthetical) - $ / shares | 12 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY |  |
Dividends on common stock | $ 1.00 | $ 1.00

X
- Definition Aggregate special dividends declared per share of common stock. + References No definition available. + Details
Name: | dit_SpecialDividendsDeclaredOnCommonStock
Namespace Prefix: | dit_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration