Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 1,138	$ 381
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	804	405
Payment of earnout for 2018 related to Ambrell acquisition	(10,048)
Adjustment to earnout payable		478
Adjustment to contingent consideration liability		1,248
Provision for excess and obsolete inventory	107	61
Foreign exchange gain	4	(74)
Amortization of deferred compensation related to stock-based awards	183	121
Loss on disposal of property and equipment	9	11
Proceeds from sale of demonstration equipment, net of gain	43	101
Deferred income tax benefit	(89)	(67)
Changes in assets and liabilities:
Trade accounts receivable	374	723
Inventories	(737)	(1,760)
Prepaid expenses and other current assets	(88)	(80)
Other assets	(6)	(6)
Accounts payable	721	1,248
Accrued wages and benefits	(1,192)	(1,037)
Accrued professional fees	182	57
Customer deposits and deferred revenue	(442)	(121)
Operating lease liabilities	(341)
Domestic and foreign income taxes payable	258	575
Other current liabilities	(355)	15
Net cash provided by (used in) operating activities	(9,475)	2,279
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(141)	(1,168)
Net cash used in investing activities	(141)	(1,168)
Effects of exchange rates on cash	(54)	37
Net cash provided by (used in) all activities	(9,670)	1,148
Cash and cash equivalents at beginning of period	17,861	13,290
Cash and cash equivalents at end of period	8,191	14,438
Cash payments for:
Domestic and foreign income taxes	$ 1,168	$ 110