XML 23 R22.htm IDEA: XBRL DOCUMENT v2.4.1.9
RELATED PARTY TRANSACTIONS (Details) (USD $)
9 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Related Party Transaction [Line Items]    
Gross Fund Management Fee $ 1,201,787us-gaap_ManagementFeeExpense $ 1,316,411us-gaap_ManagementFeeExpense
Series Twenty [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 19,446us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyMember
20,361us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyMember
Series Twenty One [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 14,325us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyOneMember
15,552us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyOneMember
Series Twenty Two [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 15,615us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyTwoMember
16,995us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyTwoMember
Series Twenty Three [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 20,721us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyThreeMember
22,679us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyThreeMember
Series Twenty Four [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 16,683us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyFourMember
19,926us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyFourMember
Series Twenty Five [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 6,284us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyFiveMember
11,877us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyFiveMember
Series Twenty Six [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 35,712us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentySixMember
49,191us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentySixMember
Series Twenty Seven [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 37,593us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentySevenMember
48,694us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentySevenMember
Series Twenty Eight [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 40,026us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyEightMember
68,418us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyEightMember
Series Twenty Nine [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 66,906us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyNineMember
74,877us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesTwentyNineMember
Series Thirty [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 38,787us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyMember
38,787us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyMember
Series Thirty One [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 76,254us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyOneMember
82,592us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyOneMember
Series Thirty Two [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 65,436us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyTwoMember
68,544us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyTwoMember
Series Thirty Three [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 30,852us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyThreeMember
30,852us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyThreeMember
Series Thirty Four [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 61,887us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyFourMember
64,149us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyFourMember
Series Thirty Five [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 50,520us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyFiveMember
50,520us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyFiveMember
Series Thirty Six [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 33,120us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtySixMember
33,120us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtySixMember
Series Thirty Seven [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 51,216us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtySevenMember
51,216us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtySevenMember
Series Thirty Eight [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 41,100us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyEightMember
41,100us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyEightMember
Series Thirty Nine [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 34,200us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyNineMember
34,200us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesThirtyNineMember
Series Forty [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 50,004us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyMember
50,004us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyMember
Series Forty One [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 59,391us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyOneMember
59,391us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyOneMember
Series Forty Two [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 62,175us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyTwoMember
62,175us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyTwoMember
Series Forty Three [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 76,695us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyThreeMember
76,695us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyThreeMember
Series Forty Four [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 63,657us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyFourMember
71,175us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyFourMember
Series Forty Five [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee 70,800us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyFiveMember
90,939us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortyFiveMember
Series Forty Six [Member]    
Related Party Transaction [Line Items]    
Gross Fund Management Fee $ 62,382us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortySixMember
$ 62,382us-gaap_ManagementFeeExpense
/ bctciv_TaxCreditSeriesAxis
= bctciv_SeriesFortySixMember