CONSOLIDATED STATEMENTS OF CASH FLOW (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities:
Net loss	$ (9,703,000)	$ (15,901,000)	$ (3,352,000)
Adjustments to reconcile net loss to net cash provided by (used for) operating activities:
Depreciation	533,000	673,000	727,000
Amortization	1,558,000	1,554,000	1,622,000
Stock-based compensation	271,000	213,000	244,000
Impairment	1,017,000
Goodwill impairment			3,175,000
Loss on disposal of assets	41,000
Tax benefit from disqualifying dispositions			71,000
Deferred income tax expense (benefit)	(21,000)	4,085,000	(402,000)
Changes in operating assets and liabilities:
Accounts receivable, net	1,033,000	1,470,000	2,777,000
Inventories	1,355,000	896,000	1,657,000
Prepaid expenses and current assets	533,000	197,000	33,000
Accounts payable	906,000	297,000	114,000
Accrued expenses and other liabilities	(102,000)	999,000	(727,000)
Net cash provided by (used for) operating activities	(2,579,000)	(5,517,000)	5,939,000
Investing activities:
Sales and maturities of marketable securities	2,639,000	7,685,000	7,303,000
Purchases of marketable securities		(5,507,000)	(10,027,000)
Purchases of property and equipment	(495,000)	(221,000)	(487,000)
Purchase of other investments	150,000	(300,000)
Capitalized software development costs		(867,000)
Net cash provided by (used for) investing activities	2,294,000	790,000	(3,211,000)
Financing activities:
Proceeds from exercise of stock options		9,000	121,000
Net cash provided by financing activities		9,000	121,000
Effect of exchange rate changes on cash	(623,000)	(52,000)	261,000
Increase (decrease) in cash and cash equivalents	(908,000)	(4,770,000)	3,110,000
Cash and cash equivalents at beginning of period	3,564,000	8,334,000	5,224,000
Cash and cash equivalents at end of period	$ 2,656,000	$ 3,564,000	$ 8,334,000