SALE OF ASSETS (Details) (USD $)	Jan. 22, 2013 Ethanol assets Guardian Energy	Feb. 02, 2013 Grain storage and handling facilities FCA Co-op
Sale of plant assets
Price on which sale was closed		$ 3,700,000
Fixed purchase price of plant assets	$ 55,000,000

Represents the amount of fixed purchase price of ethanol plant assets.

No definition available.

Name:	hlb_FixedPurchasePriceOfPlantAssets
Namespace Prefix:	hlb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant