Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Cash flows from operating activities:
Net income	$ 3,686	$ 7,374
Adjustments to reconcile net income to net cash provided in operating activities:
Deferred income tax benefit	(320)	(3,100)
Depreciation and amortization	2,413	2,241
Deferred lease obligation	(68)	(69)
Provision for losses on accounts receivable, inventories and warranty reserve	2,146	1,463
(Gain) Loss on marketable securities and other assets, net	(2)	(69)
Gain on investment in affiliate	0	(730)
Equity loss	0	650
Impairment of investment in affiliate	0	350
Employee benefit plans expense	1,072	1,156
Stock-based compensation expense	947	862
Tax benefit from exercise of stock-based compensation	(152)	(9)
Changes in operating assets and liabilities:
Accounts receivable	465	(4,522)
Inventories	(6,017)	(4,242)
Prepaid expenses and other	(133)	(102)
Other assets	(614)	(567)
Accounts payable - trade	(502)	880
Accrued liabilities	895	(29)
Income taxes refundable/payable	(1,071)	1,114
Other liabilities	88	(507)
Net cash provided by operating activities	2,833	2,144
Cash flows from investing activities:
Acquisition of FEI-Elcom, net of $763 cash acquired	0	(4,483)
Purchase of marketable securities	(2,836)	(8,782)
Proceeds from sale or redemption of marketable securities	3,006	6,636
Proceeds from sale of fixed assets	67	24
Capital expenditures	(2,250)	(1,396)
Net cash used in investing activities	(2,013)	(8,001)
Cash flows from financing activities:
Proceeds from credit line borrowing	5,000	6,344
Payment of short-term credit and lease obligations	(5,357)	(660)
Proceeds from exercise of stock options	20	13
Dividends	(1,684)	0
Tax benefit from exercise of stock-based compensation	152	9
Net cash provided by (used in) financing activities	(1,869)	5,706
Net decrease in cash and cash equivalents before effect of exchange rate changes	(1,049)	(151)
Effect of exchange rate changes on cash and cash equivalents	(273)	(342)
Net decrease in cash and cash equivalents	(1,322)	(493)
Cash and cash equivalents at beginning of year	4,782	5,275
Cash and cash equivalents at end of year	3,460	4,782
Cash paid during the year for:
Interest	186	119
Income taxes	2,993	1,475
Allocation of fair value to net assets acquired on fiscal year 2012 purchase of FEI-Elcom Tech, Inc.
Cash	0	763
Accounts receivable	0	342
Inventory	0	3,233
Other current assets	0	61
Fixed assets	0	2,100
Goodwill and other intangible assets	0	673
Deferred tax assets	0	2,573
Other assets	0	180
Accounts payable	0	(350)
Accrued expenses	0	(1,461)
Capital lease obligations	0	(234)
	$ 0	$ 7,880