Amount Outstanding of Tranches - Two Thousand Five Note Purchase Agreement (Detail) - 2005 Note Purchase Agreement [Member] - Series 2005A Tranche C [Member] $ in Millions |
6 Months Ended |
|---|---|
|
Sep. 30, 2016
USD ($)
| |
| Debt Instrument [Line Items] | |
| Principal | $ 57.2 |
| Maturity Date | Nov. 15, 2017 |
| Interest Rate | 5.48% |