Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 3,438	$ 2,132
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization expense	979	1,012
Amortization of deferred rent	(77)	(21)
Share-based compensation expense	205	176
Provision for (recoveries of) doubtful accounts, net	61	6
Inventory valuation reserve adjustments	524	278
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Operating Activities	(76)	0
Changes in operating assets and liabilities:
Receivables	(115)	784
Inventories	(1,258)	88
Deferred income taxes	0	(11)
Prepaid expenses and other assets	(262)	336
Accounts payable	1,180	(1,403)
Accrued liabilities	143	123
Income taxes payable	(14,782)	(1,155)
Deferred product revenue	512	141
Other long-term liabilities	0	138
Net cash (used in) provided by operating activities	(9,528)	2,624
Cash flows from investing activities:
Purchase of property and equipment	(723)	(260)
Purchase of marketable securities	(25,409)	0
Payment towards business acquisitions	0	(4,632)
Net cash (used in) investing activities	(26,132)	(4,892)
Cash flows from financing activities:
Proceeds from the exercise of stock options	456	301
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities	76	0
Treasury stock purchased	(2,191)	(384)
Net cash (used in) financing activities	(1,659)	(83)
Net (decrease) in cash and cash equivalents	(37,319)	(2,351)
Cash and cash equivalents at the beginning of the period	55,509	16,683
Cash and cash equivalents at the end of the period	18,190	14,332
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$ 16,987	$ 1,393