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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES    
Net earnings $ 1,598 $ 3,829
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:    
Depreciation and amortization 2,431 1,370
Payment of earnout related to Ambrell acquisition (12,167) (1,710)
Adjustment to earnout payable 4,073
Provision for excess and obsolete inventory 341 195
Foreign exchange (gain) loss 37 (115)
Amortization of deferred compensation related to stock-based awards 638 472
Loss on disposal of property and equipment 17 43
Proceeds from sale of demonstration equipment, net of gain 138 172
Deferred income tax benefit (307) (211)
Changes in assets and liabilities:    
Trade accounts receivable 1,254 896
Inventories (1,551) (2,336)
Prepaid expenses and other current assets (235) (205)
Restricted certificates of deposit 35
Accounts payable 943 995
Accrued wages and benefits (969) (79)
Accrued professional fees 192 96
Customer deposits and deferred revenue (509) 170
Accrued sales commission (257) (4)
Operating lease liabilities (1,059)
Domestic and foreign income taxes payable 171 22
Contingent liability for repayment of state and local grant funds received 263
Long-term portion of federal transition tax payable (436)
Other current liabilities (135) (15)
Net cash provided by (used in) operating activities (9,131) 7,222
CASH FLOWS FROM INVESTING ACTIVITIES    
Purchase of property and equipment (413) (2,134)
Net cash used in investing activities (413) (2,134)
CASH FLOWS FROM FINANCING ACTIVITIES    
Payment of earnout related to Ambrell acquisition (4,123)
Repurchases of common stock (179)
Net cash used in financing activities (179) (4,123)
Effects of exchange rates on cash (113) (53)
Net cash provided by (used in) all activities (9,836) 912
Cash and cash equivalents at beginning of period 17,861 13,290
Cash and cash equivalents at end of period 8,025 14,202
Cash payments for:    
Domestic and foreign income taxes $ 488 $ 2,256