CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (1,787)	$ (586)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	1,864	1,898
Provision for inventory losses	714	343
Provision for doubtful accounts	351	562
Loss on disposal of assets	1	426
Stock-based compensation expense	490	690
Deferred income taxes	2,143	(1,290)
Tax expense from exercise of stock options	0	24
Changes in operating assets and liabilities:
Accounts receivable	(308)	(495)
Income tax receivable	686	(1,595)
Inventories	2,379	(3,154)
Prepaid expenses and other current assets	1,540	(119)
Other assets	477	(115)
Deferred commissions	(549)	208
Accounts payable	710	2,553
Accrued expenses and other liabilities	(315)	(1,104)
Taxes payable	1,226	233
Commissions and incentives payable	518	2,035
Deferred revenue	184	(534)
Change in restricted cash	(326)	(3)
Net cash provided by (used in) operating activities	9,998	(23)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(1,340)	(2,286)
Proceeds from sale of assets	1	1
Net cash used in investing activities	(1,339)	(2,285)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from stock options exercised	83	39
Repurchase of common stock	(226)	(274)
Payment of cash dividends	(1,354)	(672)
Repayment of capital lease obligations	(1,567)	(1,551)
Net cash used in financing activities	(3,064)	(2,458)
Effect of currency exchange rate changes on cash and cash equivalents	3,400	1,459
Net increase (decrease) in cash and cash equivalents	8,995	(3,307)
Cash and cash equivalents at the beginning of the year	28,687	31,994
Cash and cash equivalents at the end of the year	37,682	28,687
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Income taxes paid, net	1,694	1,778
Interest paid on capital leases	68	113
Accrued asset purchases	238	341
Assets acquired through financing arrangements	$ 130	$ 694