Consolidated Statements of Cash Flows - Unaudited - USD ($)	9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities
NET INCOME	$ 34,865,000	$ 26,737,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,096,000	16,013,000
Loss on write down or disposal of property, capitalized software or investment	31,000	1,198,000
Stock compensation expense	3,110,000	2,382,000
Provision for doubtful accounts	1,620,000	1,791,000
Deferred income tax	(777,000)	(3,772,000)
Changes in operating assets and liabilities
Accounts receivable	890,000	(2,437,000)
Customer deposits	(7,142,000)	(9,429,000)
Prepaid taxes and expenses	(1,361,000)	(2,666,000)
Other assets	143,000	237,000
Accounts and taxes payable	1,811,000	324,000
Accrued liabilities	17,617,000	19,500,000
Net cash provided by operating activities	67,903,000	49,878,000
Cash Flows from Investing Activities
Purchase of property and equipment	(10,308,000)	(16,336,000)
Net cash (used in) investing activities	(10,308,000)	(16,336,000)
Cash Flows from Financing Activities
Purchase of treasury stock	(22,591,000)	(11,187,000)
Exercise of common stock options	5,456,000	2,404,000
Exercise of employee stock purchase options	252,000	223,000
Net cash (used in) financing activities	(16,883,000)	(8,560,000)
Increase in cash and cash equivalents	40,712,000	24,982,000
Cash and cash equivalents at beginning of period	55,771,000	28,611,000
Cash and cash equivalents at end of period	96,483,000	53,593,000
Supplemental Cash Flow Information:
Income taxes paid	$ 8,931,000	$ 9,901,000