Consolidated Statements of Cash Flows - Unaudited - USD ($)	6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities
NET INCOME	$ 32,915,000	$ 20,167,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,845,000	11,643,000
(Gain) loss on write down or disposal of property, capitalized software or investment	(11,000)	496,000
Stock compensation expense	2,701,000	2,233,000
Provision for doubtful accounts	129,000	1,498,000
Deferred income tax	(675,000)	(559,000)
Changes in operating assets and liabilities
Accounts receivable	(4,846,000)	(8,826,000)
Customer deposits	(4,563,000)	(3,579,000)
Prepaid taxes and expenses	(2,464,000)	449,000
Other assets	(292,000)	196,000
Accounts and taxes payable	450,000	(3,619,000)
Accrued liabilities	302,000	18,442,000
Operating lease liabilities	(292,000)	966,000
Net cash provided by operating activities	35,199,000	39,507,000
Cash Flows from Investing Activities
Purchase of property and equipment	(11,617,000)	(6,937,000)
Net cash used in investing activities	(11,617,000)	(6,937,000)
Cash Flows from Financing Activities
Purchase of treasury stock	(39,755,000)	(14,440,000)
Exercise of common stock options	7,261,000	4,472,000
Purchases under employee stock purchase plan	271,000	257,000
Net cash used in financing activities	(32,223,000)	(9,711,000)
(Decrease)/increase in cash and cash equivalents	(8,641,000)	22,859,000
Cash and cash equivalents at beginning of period	139,716,000	83,223,000
Cash and cash equivalents at end of period	131,075,000	106,082,000
Supplemental Cash Flow Information:
Income taxes paid	$ 12,534,000	$ 6,235,000