Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Derivatives (Details)	12 Months Ended
Dec. 31, 2016 derivative
Accounting Policies [Abstract]
Number of derivatives used for trading or speculative purposes	0

Represents the number of derivatives used for trading or speculative purposes.

No definition available.

Name:	bhoii_NumberOfDerivativesUsedForTradingAndSpeculativePurpose
Namespace Prefix:	bhoii_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration