Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 3,523	$ 567
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	523	304
Provision for excess and obsolete inventory	90	118
Foreign exchange gain	(29)	(10)
Amortization of deferred compensation related to stock-based awards	186	178
Loss on sale of property and equipment		3
Proceeds from sale of demonstration equipment, net of gain	32	115
Deferred income tax expense	59	102
Changes in assets and liabilities:
Trade accounts receivable	(2,884)	(2,332)
Inventories	(697)	90
Prepaid expenses and other current assets	(84)	343
Restricted certificates of deposit		125
Other assets	(3)	(7)
Accounts payable	35	565
Accrued wages and benefits	(134)	(46)
Accrued rent	(35)	(79)
Accrued professional fees	13	131
Accrued sales commissions	58	93
Customer deposits and deferred revenue	(19)	(113)
Domestic and foreign income taxes payable	324	23
Contingent consideration liability	2,302
Other current liabilities	118	25
Net cash provided by operating activities	3,378	195
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of business, net of cash acquired	(24,264)
Purchase of property and equipment	(203)	(164)
Proceeds from sale of property and equipment	7
Net cash used in investing activities	(24,460)	(164)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchases of common stock	(62)	(770)
Net cash used in financing activities	(62)	(770)
Effects of exchange rates on cash	129	32
Net cash used in all activities	(21,015)	(707)
Cash and cash equivalents at beginning of period	28,611	25,710
Cash and cash equivalents at end of period	7,596	25,003
Cash payments for:
Domestic and foreign income taxes	1,583	11
Goodwill resulting from acquisition	16,820
Net cash paid for acquisition	24,264
Ambrell [Member]
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of business, net of cash acquired	(24,264)
Cash payments for:
Fair value of assets acquired, net of cash acquired	15,852
Liabilities assumed	(8,408)
Goodwill resulting from acquisition	16,820
Net cash paid for acquisition	$ 24,264