Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net loss	$ (2,420)	$ (2,034)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	577	285
Stock-based compensation	880	531
Provision for (recovery of) sales returns and doubtful accounts	24	(205)
Changes in operating assets and liabilities:
Accounts receivable	(1,029)	(632)
Inventories	4,629	1,893
Prepaid expenses and other assets	447	(923)
Accounts payable	530	693
Accrued and other liabilities	(995)	(1,484)
Net cash provided by (used in) operating activities	2,643	(1,876)
Cash flows from investing activities:
Purchases of property and equipment	(717)	(369)
Net cash used in investing activities	(717)	(369)
Cash flows from financing activities:
Proceeds from exercise of stock options	642	128
Net repayment under credit facilities	(4,925)	0
Net cash (used in) provided by financing activities	(4,283)	128
Effect of exchange rate changes on cash	(208)	(30)
Net decrease in cash and cash equivalents	(2,565)	(2,147)
Cash and cash equivalents at beginning of period	11,528	15,686
Cash and cash equivalents at end of period	8,963	13,539
Noncash Investing and Financing Items [Abstract]
Changes in accrued and other liabilities related to property and equipment purchases	$ (142)	$ 0