Consolidated Statements Of Cash Flow (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating activities:
Net income (loss)	$ (3,352)	$ (10,017)	$ 3,005
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation	727	548	498
Amortization	1,622	1,650	1,218
Tax benefit from disqualifying dispositions	71	37	72
Stock-based compensation	244	412	342
Goodwill impairment	3,175	11,685
Deferred income tax expense (benefit)	(402)	(3,620)	174
Earn-out income		(618)
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable, net	2,777	(11)	(3,711)
Inventories	1,657	(1,493)	(1,309)
Prepaid expenses and other receivables	33	496	(1,479)
Accounts payable	114	(96)	391
Accrued liabilities	(727)	(284)	832
Net cash provided by (used for) operating activities	5,939	(1,311)	33
Investing activities:
Purchases of marketable securities	(10,027)	(7,340)	(8,882)
Sales and maturities of marketable securities	7,303	9,201	8,863
Purchases of property and equipment	(487)	(859)	(380)
Payment of earn-outs		(2,361)	(1,541)
Payments for acquisition			(8,316)
Net cash used for investing activities	(3,211)	(1,359)	(10,256)
Financing activities:
Net proceeds from of common stock offering			8,818
Proceeds from exercise of stock options	121	105	121
Repayment of bank debt			(4,556)
Net cash provided by financing activities	121	105	4,383
Effect of exchange rate changes on cash	261	(232)	(223)
Increase (decrease) in cash and cash equivalents	3,110	(2,797)	(6,063)
Cash and cash equivalents at beginning of year	5,224	8,021	14,084
Cash and cash equivalents at end of year	8,334	5,224	8,021
Supplemental disclosure:
Income taxes paid, net of refunds	75	57	1,571
Interest paid		6	155
Supplemental non-cash disclosure:
Property acquired in exchange for the fair value of an accounts receivable	649
Common stock issued in connection with CitySync acquisition			727
EIS earn-out payable recorded as additional goodwill			$ 1,665