XML 39 R29.htm IDEA: XBRL DOCUMENT v3.19.1

Inventories (Details Textual) $ in Thousands	Mar. 31, 2019 USD ($)
Inventories (Details Textual)
Carrying amount of inventories to net realizable	$ 693

X

- References

No definition available.

+ Details

Name:	bdr_CarryingAmountOfInventoriesToNetRealizable
Namespace Prefix:	bdr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	bdr_InventoriesTextualAbstract
Namespace Prefix:	bdr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration