Fair Value Measurements (Details Textual) (USD $)	Jun. 30, 2013	Jun. 30, 2012
Business Acquisition Contingent Consideration At Fair Value Current1	$ 1,715,000	$ 1,700,000
Business Acquisition Contingent Consideration At Fair Value Noncurrent1	$ 1,600,000	$ 3,300,000

Noncurrent portion of the fair value as of the acquisition date of potential payments under the contingent consideration arrangement, including cash and shares as applicable.

No definition available.

Name:	bolt_BusinessAcquisitionContingentConsiderationAtFairValueNoncurrent1
Namespace Prefix:	bolt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant