Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Cash flows from operating activities:
Net earnings	$ 4,343	$ 6,836
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	5,045	4,217
Stock-based compensation expense	1,111	1,212
Net (gain)/loss on investments	(170)	1,243
Deferred income taxes	(281)	(525)
Other, net		15
Changes in operating assets and liabilities, net of effects of acquisition:
Purchases of trading securities	(7,150)	(10,158)
Proceeds from maturities and sales of trading securities	12,683	8,292
Accounts receivable, net	3,661	(1,127)
Prepaid expenses and other assets	(5)	(1,414)
Accounts payable and other liabilities	(53)	245
Deferred revenue	78	(371)
Net cash provided by operating activities	19,262	8,465
Cash flows from investing activities:
Capitalized computer software development costs	(2,471)	(2,681)
Purchases of property and equipment, net of disposals	(500)	(481)
Purchase of business, net of cash acquired	(4,441)
Net cash used in investing activities	(7,412)	(3,162)
Cash flows from financing activities:
Repurchase of common stock		(70)
Excess tax benefits from stock based compensation		231
Proceeds from exercise of stock options	4,397	1,636
Payment for accrued acquisition consideration	(200)	(200)
Dividends paid	(9,299)	(8,593)
Net cash used in financing activities	(5,102)	(6,996)
Net change in cash and cash equivalents	6,748	(1,693)
Cash and cash equivalents at beginning of period	49,004	44,655
Cash and cash equivalents at end of period	$ 55,752	$ 42,962