Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,395	$ 2,428
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,501	1,528
Deferred income taxes	(58)	(105)
Non-cash interest income	36
Stock-based compensation	319	278
Changes in assets and liabilities:
Accounts receivable	303	(857)
Other current assets	(633)	(253)
Accounts payable	(428)	322
Accrued expenses and accrued income taxes	(745)	259
Net cash provided by operating activities	1,690	3,600
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from short-term investments	3,810
Purchases of equipment and leasehold improvements	(165)	(281)
Cost of internally developed software	(191)	(152)
Other assets	14	(102)
Net cash provided by / (used in) investing activities	3,468	(535)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of stock, net of tax withholding	(33)	(92)
Payments of equipment financing	(207)	(478)
Cash dividends paid	(1,985)	(1,812)
Net cash used in financing activities	(2,225)	(2,382)
Effect of exchange rate changes on cash and cash equivalents	95	(1,127)
Net increase (decrease) in cash and cash equivalents	3,028	(444)
Cash and cash equivalents, beginning of period	4,069	8,165
Cash and cash equivalents, end of period	7,097	7,721
Supplemental Disclosures of Cash Flow Information:
Cash paid for income taxes	1,499	1,910
Cash paid for interest	38	56
Cash paid for operating leases	523	502
Right-of-use assets acquired through operating leases	1,927
Purchases of equipment through accounts payable and accrued liabilities	$ 450	$ 397