Interest Rate Swap Agreements (Tables)

9 Months Ended

Dec. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of locations and amounts of (gains) losses recognized in income

	Three months ended December 31,					Nine months ended December 31,
	2015			2014		2015			2014
Periodic change in fair value of interest rate swap agreements	$	(250,798	)	$	144,999	$	(128,170	)	$	105,878
Periodic settlement differentials included in interest expense		89,360			98,517		278,838			297,355
Total	$	(161,438	)	$	243,516	$	150,668		$	403,233

Schedule of variable rates received and average fixed rates paid under the swap agreements

	Three months ended December 31,						Nine months ended December 31,
	2015			2014			2015			2014
Variable rate received		0.24	%		0.16	%		0.21	%		0.15	%
Fixed rate paid		0.94	%		0.94	%		0.94	%		0.94	%