Consolidated Statements of Cash Flows - Unaudited - USD ($)	9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities
NET INCOME	$ 26,737,000	$ 21,492,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,013,000	15,617,000
Loss on write down or disposal of property, capitalized software or investment	1,198,000	424,000
Stock compensation expense	2,382,000	1,736,000
Provision for doubtful accounts	1,791,000	1,684,000
Deferred income tax	(3,772,000)	220,000
Changes in operating assets and liabilities
Accounts receivable	(2,437,000)	(1,118,000)
Customer deposits	(9,429,000)	(4,980,000)
Prepaid taxes and expenses	(2,666,000)	(2,000,000)
Other assets	237,000	(137,000)
Accounts and taxes payable	324,000	(722,000)
Accrued liabilities	19,500,000	4,293,000
Net cash provided by operating activities	49,878,000	36,509,000
Cash Flows from Investing Activities
Investment in private equity	0	(250,000)
Purchase of property and equipment	(16,336,000)	(17,173,000)
Net cash (used in) investing activities	(16,336,000)	(17,423,000)
Cash Flows from Financing Activities
Purchase of treasury stock	(11,187,000)	(15,125,000)
Exercise of common stock options	2,404,000	1,868,000
Exercise of employee stock purchase options	223,000	201,000
Net cash (used in) financing activities	(8,560,000)	(13,056,000)
Increase in cash and cash equivalents	24,982,000	6,030,000
Cash and cash equivalents at beginning of period	28,611,000	32,779,000
Cash and cash equivalents at end of period	53,593,000	38,809,000
Supplemental Cash Flow Information:
Income taxes paid	9,901,000	13,929,000
Purchase of software license under finance agreement	$ 0	$ 3,492,000