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DIVIDENDS: | 3 Months Ended
--- | ---
Dec. 31, 2012
DIVIDENDS: |
DIVIDENDS: | 5. DIVIDENDS: The Company paid cash dividends on its common stock and convertible preferred stock totaling approximately $0.2 million during both Q1 2013 and Q1 2012.

X
- Details
Name: | dit_DividendsDisclosureAbstract
Namespace Prefix: | dit_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition This element represents cash dividends paid by the Company. + References No definition available. + Details
Name: | dit_DividendsPaidDisclosureTextBlock
Namespace Prefix: | dit_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration