CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (586)	$ 5,839
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	1,898	1,793
Provision for inventory losses	343	480
Provision for doubtful accounts	562	369
Loss on disposal of assets	426	28
Stock-based compensation expense	690	592
Deferred income taxes	(1,290)	88
Tax expense from exercise of stock options	24	66
Changes in operating assets and liabilities:
Accounts receivable	(495)	(266)
Income tax receivable	(1,595)	0
Inventories	(3,154)	605
Prepaid expenses and other current assets	(119)	462
Other assets	(115)	86
Deferred commissions	208	1,031
Accounts payable	2,553	(1,562)
Accrued expenses and other liabilities	(1,104)	(392)
Taxes payable	233	(1,819)
Commissions and incentives payable	2,035	(969)
Deferred revenue	(534)	(2,063)
Change in restricted cash	(3)	18
Net cash provided by (used in) operating activities	(23)	4,386
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(2,286)	(1,979)
Proceeds from sale of assets	1	0
Net cash used in investing activities	(2,285)	(1,979)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from stock options exercised	39	28
Repurchase of common stock	(274)	0
Payment of cash dividends	(672)	0
Proceeds from note payable	0	1,640
Repayment of capital lease obligations	(1,551)	(1,526)
Net cash provided by (used in) financing activities	(2,458)	142
Effect of currency exchange rate changes on cash and cash equivalents	1,459	1,446
Net increase (decrease) in cash and cash equivalents	(3,307)	3,995
Cash and cash equivalents at the beginning of the year	31,994	27,999
Cash and cash equivalents at the end of the year	28,687	31,994
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Income taxes paid, net	1,778	4,659
Interest paid on capital leases and financing arrangements	113	89
Assets acquired through financing arrangements	$ 694	$ 670