Consolidated Statements of Cash Flows - Unaudited - USD ($)	6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from Operating Activities
NET INCOME	$ 14,443,000	$ 15,167,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,410,000	9,916,000
Loss (gain) on disposal of assets	8,000	(5,000)
Stock compensation expense	1,128,000	1,104,000
Write-off of uncollectible accounts	1,080,000	897,000
Deferred income tax	(427,000)	(399,000)
Changes in operating assets and liabilities
Accounts receivable	(1,779,000)	(2,585,000)
Customer deposits	(5,540,000)	(7,403,000)
Prepaid taxes and expenses	(1,268,000)	5,205,000
Other assets	(213,000)	(571,000)
Accounts and taxes payable	(552,000)	(271,000)
Accrued liabilities	3,257,000	3,535,000
Net cash provided by operating activities	20,547,000	24,590,000
Cash Flows from Investing Activities
Investment in private equity	(250,000)	(600,000)
Purchase of property and equipment	(10,843,000)	(8,025,000)
Net cash (used in) investing activities	(11,093,000)	(8,625,000)
Cash Flows from Financing Activities
Purchase of treasury stock	(4,199,000)	(18,775,000)
Tax effect of stock option exercises	869,000	475,000
Exercise of common stock options	1,758,000	1,525,000
Exercise of employee stock purchase options	201,000	181,000
Net cash (used in) financing activities	(1,371,000)	(16,594,000)
(Decrease) Increase in cash and cash equivalents	8,083,000	(629,000)
Cash and cash equivalents at beginning of period	32,779,000	25,516,000
Cash and cash equivalents at end of period	40,862,000	24,887,000
Supplemental Cash Flow Information:
Income taxes paid	9,502,000	6,946,000
Purchase of software license under finance agreement	$ 3,492,000	$ 0