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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Cash flows from operating activities:    
Net income $ 4,597 $ 4,230
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 2,181 2,455
Stock-based compensation 868 739
Change in inventory reserve 197 67
Deferred taxes (93)
Adjustment to contingent consideration (192)
Other 64 (96)
Cash used by changes in operating assets and liabilities    
Accounts receivable, net (587) 1,830
Inventories, net 86 529
Prepaid expenses and other (2,579) (1,340)
Accounts payable 50 494
Accrued liabilities and taxes payable (4,272) (1,526)
Unearned revenues 119 (91)
Contingent Consideration (463)
Net cash provided by operating activities 724 6,543
Cash flows from investing activities:    
Acquisitions (2,555)
Purchases of property, plant and equipment (226) (300)
Net cash used in investing activities (2,781) (300)
Cash flows from financing activities:    
Payments on debt (3,000) (6,875)
Dividends (624) (610)
Proceeds from the exercise of stock options 2,709 3,043
Net cash used in financing activities (915) (4,442)
Effect of exchange rate changes on cash and cash equivalents 102 130
Net (decrease) increase in cash and cash equivalents (2,870) 1,931
Cash and cash equivalents at beginning of period 10,185 5,469
Cash and cash equivalents at end of period 7,315 7,400
Cash paid for:    
Income taxes 1,727 284
Interest 217 456
Supplemental non-cash activity:    
Contingent consideration as part of an acquisition $ 513