Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 3,829	$ 5,541
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	1,370	1,317
Payment of earnout for 2017 related to Ambrell acquisition	(1,710)
Adjustment to earnout payable	4,073	(549)
Provision for excess and obsolete inventory	195	161
Foreign exchange gain	(115)	(130)
Amortization of deferred compensation related to stock-based awards	472	292
(Gain) loss on disposal of property and equipment	43	(4)
Proceeds from sale of demonstration equipment, net of gain	172	53
Deferred income tax expense (benefit)	(211)	(225)
Changes in assets and liabilities:
Trade accounts receivable	896	(1,060)
Inventories	(2,336)	(581)
Prepaid expenses and other current assets	(205)	(164)
Other assets		1
Accounts payable	995	(426)
Accrued wages and benefits	(79)	(18)
Customer deposits and deferred revenue	170	302
Domestic and foreign income taxes payable	22	472
Long-term portion of Federal transition tax payable	(436)
Other current liabilities	77	206
Net cash provided by operating activities	7,222	5,188
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of business, net of cash acquired		(21,962)
Purchase of property and equipment	(2,134)	(435)
Proceeds from sale of property and equipment		35
Net cash used in investing activities	(2,134)	(22,362)
CASH FLOWS FROM FINANCING ACTIVITIES
Payment of earnout for 2017 related to Ambrell acquisition	(4,123)
Repurchases of common stock		(62)
Net cash used in financing activities	(4,123)	(62)
Effects of exchange rates on cash	(53)	124
Net cash provided by (used in) all activities	912	(17,112)
Cash and cash equivalents at beginning of period	13,290	28,611
Cash and cash equivalents at end of period	14,202	11,499
Cash payments for:
Domestic and foreign income taxes	2,256	2,555
Net cash paid for acquisition		21,962
Ambrell [Member]
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of business, net of cash acquired		(21,962)
Cash payments for:
Fair value of assets acquired, net of cash		22,652
Liabilities assumed		(8,599)
Goodwill resulting from acquisition		12,032
Contingent consideration		(4,123)
Net cash paid for acquisition		$ 21,962