Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 3,077	$ 2,156
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	847	933
Provision for excess and obsolete inventory	311	688
Foreign exchange (gain) loss	4	(12)
Amortization of deferred compensation related to restricted stock	128	113
Profit sharing expense funded through the issuance of treasury stock		150
Gain on sale of property and equipment	(3)
Proceeds from sale of demonstration equipment, net of gain	32	109
Deferred income tax expense	307	443
Changes in assets and liabilities:
Trade accounts receivable	(233)	1,868
Inventories	(416)	948
Prepaid expenses and other current assets	(6)	(60)
Restricted certificates of deposit		50
Other assets	(18)	(3)
Accounts payable	23	(67)
Accrued wages and benefits	63	(237)
Accrued sales commissions	(43)	(227)
Accrued rent	48	122
Accrued professional fees	(19)	(66)
Deferred revenue and customer deposits	(182)	(171)
Domestic and foreign income taxes payable		75
Other current liabilities	(150)	(167)
Net cash provided by operating activities	3,770	6,645
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of business		(3,802)
Purchase of property and equipment	(424)	(431)
Proceeds from sale of property and equipment	10	19
Net cash used in investing activitites	(414)	(4,214)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash dividends paid		(834)
Proceeds from stock options exercised	30
Net cash provided by (used in) financing activities	30	(834)
Effects of exchange rates on cash	56	22
Net cash provided by all activities	3,442	1,619
Cash and cash equivalents at beginning of period	15,576	13,957
Cash and cash equivalents at end of period	19,018	15,576
Cash payments for:
Domestic and foreign income taxes	623	379
Interest		8
Details of acquisition:
Fair value of assets acquired		4,026
Liabilities assumed		(274)
Goodwill resulting from acquisition		50
Net cash paid for acquisition		3,802
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Issuance of non-vested shares of restricted stock	462
Forfeiture of non-vested shares of restricted stock		$ (14)