XML 67 R38.htm IDEA: XBRL DOCUMENT v2.4.0.8

Goodwill (Details Textual)	Mar. 31, 2014
Goodwill [Line Items]
Percentage Of Goodwill On Assets	21.00%

X

- Definition

Percentage of goodwill on assets.

+ References

No definition available.

+ Details

Name:	bolt_PercentageOfGoodwillOnAssets
Namespace Prefix:	bolt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_GoodwillLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration