Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Cash flows from operating activities:
Net income	$ 676	$ 768
Non-cash charges to earnings, net	1,270	1,250
Net changes in operating assets and liabilities	(4,115)	(2,420)
Net cash used in operating activities	(2,169)	(402)
Cash flows from investing activities:
Purchase of marketable securities	(39)	(717)
Proceeds on redemption of marketable securities	1,000	2,000
Purchase of fixed assets	(1,456)	(332)
Net cash (used in) provided by investing activities	(495)	951
Cash flows from financing activities:
Borrowings from long-term credit facility	3,200	0
Proceeds from exercise of stock options	0	20
Tax benefit from exercise of stock-based compensation	134	0
Payment of lease obligations	(10)	(107)
Net cash provided by (used in) financing activities	3,324	(87)
Net increase in cash and cash equivalents before effect of exchange rate changes	660	462
Effect of exchange rate changes on cash and cash equivalents	29	217
Net increase in cash and cash equivalents	689	679
Cash and cash equivalents at beginning of period	3,460	4,782
Cash and cash equivalents at end of period	4,149	5,461
Cash paid during the period for:
Interest	52	46
Income Taxes	$ 2	$ 150