The amount of accrued interest on loan purchase agreement.

No definition available.

Name:	boch_LoanPurchaseAgreementFinancialAssetForWhichTransferIsAccountedAsAPurchaseInterestAccrued
Namespace Prefix:	boch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of discount (premium) received in purchase agreement in exchange for a cash payment.

+ References

No definition available.

+ Details

Name:	boch_LoanPurchaseAgreementFinancialAssetForWhichTransferIsAccountedAsAPurchaseNetDiscountPremium
Namespace Prefix:	boch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount to date of the par value that has been purchased according to agreement.

+ References

No definition available.

+ Details

Name:	boch_LoanPurchaseAgreementFinancialAssetForWhichTransferIsAccountedAsAPurchaseParValuePurchased
Namespace Prefix:	boch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The maximum amount of commitment made by the company to purchase set amount of loans.

+ References

No definition available.

+ Details

Name:	boch_LoanPurchaseAgreementFinancialAssetForWhichTransferIsAccountedAsAPurchaseTotalCommitmentToPurchase
Namespace Prefix:	boch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount to date of loan repayments made by the Company,

+ References

No definition available.

+ Details

Name:	boch_LoanPurchaseAgreementFinancialAssetForWhichTransferIsAccountedAsSaleLoanPayments
Namespace Prefix:	boch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount maximum amount of loans to be repurchased per month according to a set purchase agreement that is the transfer of financial assets accounted for as a sale.

+ References

No definition available.

+ Details

Name:	boch_LoanPurchaseAgreementTransferOfFinancialAssetsAccountedForAsAPurchaseMaximumMonthlyLoanPurchase
Namespace Prefix:	boch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cash payments for and related to principal collection on loans related to operating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

+ Details

Name:	us-gaap_PaymentsForLoans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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

- Definition

Represents the initial fair value recorded for assets received on transfer of financial assets in a securitization, asset-backed financing arrangement, or a similar transfer which transaction is recognized as a sale of the transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (b)(2)(i)

-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107207-111719

+ Details

Name:	us-gaap_TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Note 16 - Purchase of Financial Assets (Details) (USD $)	0 Months Ended				11 Months Ended
	Feb. 27, 2015	Sep. 23, 2014	May 12, 2014	Feb. 27, 2014	Mar. 31, 2015	Sep. 23, 2014	Feb. 27, 2014
Transfers and Servicing [Abstract]
Loan Purchase Agreement, Financial Asset for Which Transfer is Accounted As a Purchase, Total Commitment to Purchase	$ 6,400,000	$ 18,100,000	$ 40,000,000
Loan Purchase Agreement, Financial Asset for Which Transfer is Accounted As a Purchase, Par Value Purchased	6,400,000	18,100,000		12,900,000	38,600,000
Loan Purchase Agreement Financial Asset for Which Transfer is Accounted as a Purchase Interest Accrued	17,000	77,000
Loan Purchase Agreement Financial Asset for Which Transfer is Accounted as a Purchase Net Discount (Premium)	91,000	377,000			2,300,000
Payments for Loans	6,500,000us-gaap_PaymentsForLoans	18,500,000us-gaap_PaymentsForLoans		12,700,000us-gaap_PaymentsForLoans	36,300,000us-gaap_PaymentsForLoans
Transfers of Financial Assets Accounted for as Sale, Initial Fair Value of Assets Obtained as Proceeds						18,100,000	12,700,000
Loan Purchase Agreement, Transfer Of Financial Assets Accounted For As a Purchase, Maximum Monthly Loan Purchase			4,000,000
Loan Purchase Agreement, Financial Asset for Which Transfer is Accounted As Sale, Loan Payments					$ 7,200,000