Consolidated Income Statements - Unaudited - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
REVENUES	$ 177,426,000	$ 157,743,000	$ 353,733,000	$ 310,363,000
Cost of revenues	141,332,000	121,082,000	277,770,000	236,489,000
Gross profit	36,094,000	36,661,000	75,963,000	73,874,000
General and administrative expenses	17,549,000	16,658,000	36,219,000	33,303,000
Income before income tax provision	18,545,000	20,003,000	39,744,000	40,571,000
Income tax provision	3,889,000	3,931,000	8,397,000	7,656,000
NET INCOME	$ 14,656,000	$ 16,072,000	$ 31,347,000	$ 32,915,000
Net income per common and common equivalent share
Basic	$ 0.84	$ 0.90	$ 1.80	$ 1.84
Diluted	$ 0.83	$ 0.88	$ 1.77	$ 1.81
Weighted average common and common equivalent shares
Basic	17,386,000	17,841,000	17,446,000	17,869,000
Diluted	17,650,000	18,232,000	17,726,000	18,226,000