Consolidated Statements of Cash Flows - Unaudited - USD ($)	6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities
NET INCOME	$ 17,168,000	$ 14,443,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,540,000	10,410,000
Loss on write down or disposal of property, capitalized software or investment	450,000	8,000
Stock compensation expense	1,529,000	1,128,000
Provision for doubtful accounts	887,000	1,080,000
Deferred income tax	(559,000)	(427,000)
Changes in operating assets and liabilities
Accounts receivable	(4,042,000)	(1,779,000)
Customer deposits	(6,567,000)	(5,540,000)
Prepaid taxes and expenses	(190,000)	(1,268,000)
Other assets	(274,000)	(213,000)
Accounts and taxes payable	(1,140,000)	(552,000)
Accrued liabilities	12,795,000	3,257,000
Net cash provided by operating activities	30,597,000	20,547,000
Cash Flows from Investing Activities
Investment in private equity	0	(250,000)
Purchase of property and equipment	(11,428,000)	(10,843,000)
Net cash (used in) investing activities	(11,428,000)	(11,093,000)
Cash Flows from Financing Activities
Purchase of treasury stock	(11,187,000)	(4,199,000)
Tax effect of stock option exercises	0	869,000
Exercise of common stock options	1,308,000	1,758,000
Exercise of employee stock purchase options	232,000	201,000
Net cash (used in) financing activities	(9,647,000)	(1,371,000)
Increase in cash and cash equivalents	9,522,000	8,083,000
Cash and cash equivalents at beginning of period	28,611,000	32,779,000
Cash and cash equivalents at end of period	38,133,000	40,862,000
Supplemental Cash Flow Information:
Income taxes paid	5,197,000	9,502,000
Purchase of software license under finance agreement	$ 0	$ 3,492,000