Consolidated Income Statements (Unaudited) (USD $)	3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Consolidated Income Statements [Abstract]
REVENUES	$ 102,307,000	$ 91,503,000
Cost of revenues	76,764,000	67,700,000
Gross profit	25,543,000	23,803,000
General and administrative expenses	12,294,000	11,486,000
Income before income tax provision	13,249,000	12,317,000
Income tax provision	5,051,000	4,557,000
NET INCOME	$ 8,198,000	$ 7,760,000
Net income per common and common equivalent share
Basic	$ 0.71	$ 0.65
Diluted	$ 0.70	$ 0.64
Weighted average common and common equivalent
Basic	11,617,000	11,957,000
Diluted	11,787,000	12,187,000