Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 1,295	$ 1,291
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	426	471
Provision for excess and obsolete inventory	197	358
Foreign exchange (gain) loss	14	(1)
Amortization of deferred compensation related to restricted stock	58	61
Profit sharing expense funded through the issuance of treasury stock		75
Loss on sale of property and equipment	6	10
Proceeds from sale of demonstration equipment, net of gain	3	73
Deferred income tax expense	170	372
Changes in assets and liabilities:
Trade accounts receivable	(1,753)	(1,921)
Inventories	(423)	(42)
Prepaid expenses and other current assets	116	50
Restricted certificates of deposit		50
Other assets		(17)
Accounts payable	287	1,010
Accrued wages and benefits	(238)	(373)
Accrued sales commissions	194	(13)
Accrued rent	29	54
Accrued professional fees	1	(66)
Deferred revenue and customer deposits	(56)	107
Domestic and foreign income taxes payable	255	215
Other current liabilities	(40)	(57)
Net cash provided by operating activities	541	1,707
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of business		(3,802)
Purchase of property and equipment	(95)	(129)
Net cash used in investing activities	(95)	(3,931)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock options exercised	30
Net cash provided by financing activities	30
Effects of exchange rates on cash	(20)	(34)
Net cash provided by (used in) all activities	456	(2,258)
Cash and cash equivalents at beginning of period	15,576	13,957
Cash and cash equivalents at end of period	16,032	11,699
Cash payments for:
Domestic and foreign income taxes	137	45
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	$ 124