Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Commitments And Contingencies Disclosure [Abstract]
Estimated remediation cost	$ 0.4	$ 0.4
Future remediation cost	$ 0.7

Site contingency environmental remediation costs incurred.

No definition available.

Name:	hbpi_SiteContingencyEnvironmentalRemediationCostsIncurred
Namespace Prefix:	hbpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration