CONSOLIDATED STATEMENTS OF CASH FLOWS - (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 591	$ 1,099
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	443	396
Provision for inventory losses	88	196
Provision for doubtful accounts	243	128
Loss on disposal of assets	3	7
Stock-based compensation expense	218	141
Tax benefit from exercise of stock options	0	(16)
Deferred income taxes	28	(1)
Changes in operating assets and liabilities:
Accounts receivable	(89)	(26)
Income tax receivable	(4)	(6)
Inventories	(1,951)	(3,124)
Prepaid expenses and other current assets	(673)	962
Deferred commissions	(470)	58
Other assets	(35)	(83)
Accounts payable	2,912	3,126
Accrued expenses and other liabilities	(1,591)	(334)
Taxes payable	669	(527)
Commissions and incentives payable	689	(1,347)
Deferred revenue	1,119	516
Change in restricted cash	(14)	9
Net cash provided by operating activities	2,176	1,174
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(709)	(787)
Net cash used in investing activities	(709)	(787)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from stock options exercised	12	20
Tax benefit from exercise of stock options	0	16
Repayment of financing arrangement obligations	(364)	(369)
Net cash used in financing activities	(352)	(333)
Effect of currency exchange rate changes on cash and cash equivalents	472	346
Net increase in cash and cash equivalents	1,587	400
Cash and cash equivalents at the beginning of the period	31,994	27,999
Cash and cash equivalents at the end of the period	33,581	28,399
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Income taxes paid, net	5,335	3,245
Interest paid on capital leases	26	24
Assets acquired through financing arrangements	$ 409	$ 1,271