Consolidated Statements Of Cash Flows (USD $) In Thousands	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 2,653	$ 3,630
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	2,671	1,747
Stock-based compensation expense	2,040	1,290
Provision for deferred income taxes	557	138
Excess tax benefit from stock-based compensation	(405)	(481)
Other non-cash items	(174)	(246)
Changes in operating assets and liabilities:
Accounts receivable	6,541	4,314
Inventory	(5,964)	(1,204)
Prepaid income taxes	704	1,800
Prepaid expenses and other current assets	(58)	(704)
Other non-current assets	719	(739)
Accounts payable and accrued expenses	(3,672)	(1,558)
Deferred revenues and customer advances	(1,436)	(503)
Income taxes payable	678	1,652
Other non-current liabilities	(638)	214
Net cash provided by operating activities	4,216	9,350
Cash flows from investing activities:
Sales and maturities of marketable securities		18,025
Purchases of property and equipment	(1,646)	(1,595)
Payments for acquired intangible assets	(20)	(558)
Net cash (used in) provided by investing activities	(1,666)	15,872
Cash flows from financing activities:
Proceeds from employee stock plans	90	294
Excess tax benefits from stock-based compensation	405	554
Payments of deferred offering costs	(30)
Payments of capital lease obligations	(59)	(78)
Net cash provided by financing activities	406	770
Effect of exchange rate changes on cash and cash equivalents	31	6
Net increase in cash and cash equivalents	2,987	25,998
Cash and cash equivalents at beginning of period	162,875	56,241
Cash and cash equivalents at end of period	165,862	82,239
Cash paid (received) during the period for:
Interest	9	2
Income taxes	(624)	(1,631)
Supplemental disclosures-non-cash activities:
Issuance of restricted stock awards to employees	$ 3,587	$ 6,543