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Consolidated Statements of Income - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Income Statement [Abstract] |  |  |
Revenues | $ 558,350,000 | $ 518,686,000 | $ 503,584,000
Cost of revenues | 451,097,000 | 413,894,000 | 399,040,000
Gross profit | 107,253,000 | 104,792,000 | 104,544,000
General and administrative | 59,350,000 | 57,243,000 | 58,484,000
Income before income taxes | 47,903,000 | 47,549,000 | 46,060,000
Income tax provision | 12,208,000 | 18,070,000 | 17,535,000
Net income | $ 35,695,000 | $ 29,479,000 | $ 28,525,000
Net income per share: |  |  |
Basic | $ 1.90 | $ 1.52 | $ 1.44
Diluted | $ 1.87 | $ 1.51 | $ 1.43
Weighted average shares outstanding: |  |  |
Basic | 18,825,000 | 19,418,000 | 19,826,000
Diluted | 19,042,000 | 19,570,000 | 20,004,000

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