CONDENSED BALANCE SHEETS [Parenthetical] - $ / shares	Jun. 30, 2016	Mar. 31, 2016	Sep. 04, 1993
Beneficial assignee certificate, par value (in dollars per share)	$ 10	$ 10	$ 10
Limited Partners Capital Account, Units Authorized	22,000,000	22,000,000	20,000,000
Limited Partners' Capital Account, Units Issued	21,996,102	21,996,102
Limited Partners' Capital Account, Units Outstanding	21,902,747	21,902,747
Series Fifteen [Member]
Beneficial assignee certificate, par value (in dollars per share)	$ 10	$ 10
Limited Partners Capital Account, Units Authorized	22,000,000	22,000,000
Limited Partners' Capital Account, Units Issued	3,870,500	3,870,500
Limited Partners' Capital Account, Units Outstanding	3,848,900	3,848,900
Series Sixteen [Member]
Beneficial assignee certificate, par value (in dollars per share)	$ 10	$ 10
Limited Partners Capital Account, Units Authorized	22,000,000	22,000,000
Limited Partners' Capital Account, Units Issued	5,429,402	5,429,402
Limited Partners' Capital Account, Units Outstanding	5,404,500	5,404,500
Series Seventeen [Member]
Beneficial assignee certificate, par value (in dollars per share)	$ 10	$ 10
Limited Partners Capital Account, Units Authorized	22,000,000	22,000,000
Limited Partners' Capital Account, Units Issued	5,000,000	5,000,000
Limited Partners' Capital Account, Units Outstanding	4,972,947	4,972,947
Series Eighteen [Member]
Beneficial assignee certificate, par value (in dollars per share)	$ 10	$ 10
Limited Partners Capital Account, Units Authorized	22,000,000	22,000,000
Limited Partners' Capital Account, Units Issued	3,616,200	3,616,200
Limited Partners' Capital Account, Units Outstanding	3,605,200	3,605,200
Series Nineteen [Member]
Beneficial assignee certificate, par value (in dollars per share)	$ 10	$ 10
Limited Partners Capital Account, Units Authorized	22,000,000	22,000,000
Limited Partners' Capital Account, Units Issued	4,080,000	4,080,000
Limited Partners' Capital Account, Units Outstanding	4,071,200	4,071,200