CONSOLIDATED STATEMENTS OF CASH FLOWS - (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (264)	$ (1,247)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization expense	511	502
Provision for inventory losses	206	111
Provision for doubtful accounts	89	44
Loss on disposal of assets	14	0
Stock-based compensation expense	281	322
Deferred income taxes	(1,118)	(187)
Changes in operating assets and liabilities:
Accounts receivable	(216)	82
Income tax receivable	907	1,431
Inventories	131	(1,213)
Prepaid expenses and other current assets	(853)	246
Deferred commissions	31	(88)
Other assets	(67)	327
Accounts payable	(555)	638
Accrued expenses and other liabilities	182	(838)
Taxes payable	681	(383)
Commissions and incentives payable	1,033	119
Deferred revenue	44	44
Net cash provided by operating activities	975	86
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(282)	(361)
Proceeds from sale of assets	1	0
Net cash used in investing activities	(281)	(361)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from stock options exercised	0	54
Payment of cash dividends	(340)	(337)
Repayment of capital lease obligations	(364)	(412)
Net cash used in financing activities	(704)	(695)
Effect of currency exchange rate changes on cash and cash equivalents	298	2,238
Net increase in cash, cash equivalents, and restricted cash	288	1,268
Cash, cash equivalents, and restricted cash at the beginning of the period	46,761	36,626
Cash, cash equivalents, and restricted cash at the end of the period	37,936
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Income taxes paid	248	255
Interest paid on capital leases and financing arrangements	11	18
Assets acquired through financing arrangements	$ 1,356	$ 130