|
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
|
Dec. 31, 2012
|
Mar. 31, 2012
|
|---|---|---|
| Treasury stock, shares | 389,321 | 333,775 |
|
Common stock, Class A
|
||
| Common stock, par value | 0.01 | 0.01 |
| Common stock, shares authorized | 600,000,000 | 600,000,000 |
| Common stock, shares issued | 135,965,937 | 128,726,324 |
| Common stock, shares outstanding | 135,576,616 | 128,392,549 |
|
Non-voting common stock, Class B
|
||
| Common stock, par value | 0.01 | 0.01 |
| Common stock, shares authorized | 16,000,000 | 16,000,000 |
| Common stock, shares issued | 1,457,350 | 2,487,125 |
| Common stock, shares outstanding | 1,457,350 | 2,487,125 |
|
Restricted common stock, Class C
|
||
| Common stock, par value | 0.01 | 0.01 |
| Common stock, shares authorized | 5,000,000 | 5,000,000 |
| Common stock, shares issued | 1,237,436 | 1,533,020 |
| Common stock, shares outstanding | 1,237,436 | 1,533,020 |
|
Special voting common stock, Class E
|
||
| Common stock, par value | 0.003 | 0.003 |
| Common stock, shares authorized | 25,000,000 | 25,000,000 |
| Common stock, shares issued | 7,478,522 | 10,140,067 |
| Common stock, shares outstanding | 7,478,522 | 10,140,067 |