| Schedule of Defined Benefit Plans |
| | Three Months Ended | | | September 30, | | | 2012 | | 2011 | | | Service cost | $92,944 | | $84,662 | | | Interest cost | 78,503 | | 68,629 | | | Expected return on plan assets | (79,680) | | (70,980) | | | Recognized net actuarial loss | 17,318 | | 14,153 | | | | | | | | | Total net periodic benefit cost | $109,085 | | $96,464 | | | | Six Months Ended | | | September 30, | | | 2012 | | 2011 | | | Service cost | $185,888 | | $169,324 | | | Interest cost | 157,006 | | 137,258 | | | Expected return on plan assets | (159,360) | | (141,960) | | | Recognized net actuarial loss | 34,636 | | 28,306 | | | | | | | | | Total net periodic benefit cost | $218,170 | | $192,928 | | |