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Stock Based Compensation and Stock Options (Details 1) (USD $)
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3 Months Ended | |
|---|---|---|
|
Jun. 30, 2013
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Jun. 30, 2012
|
|
| Stock compensation expense for time based options and performance based options | ||
| Cost of revenues | $ 91,195,000 | $ 81,425,000 |
| General and administrative | 12,842,000 | 12,174,000 |
| Total cost of stock-based compensation included in income before income tax provision | 405,000 | 297,000 |
| Amount of income tax benefit recognized | 5,467,000 | 4,411,000 |
| Diluted | $ 0.40 | $ 0.29 |
|
Time Based Options [Member] | Performance Shares [Member]
|
||
| Stock compensation expense for time based options and performance based options | ||
| Cost of revenues | 136,000 | 113,000 |
| General and administrative | 269,000 | 184,000 |
| Total cost of stock-based compensation included in income before income tax provision | 405,000 | 297,000 |
| Amount of income tax benefit recognized | (157,000) | (119,000) |
| Amount charged against net income | $ 248,000 | $ 178,000 |
| Diluted | $ (0.01) | $ (0.01) |