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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
OPERATING ACTIVITIES:    
Net income $ 5,314 $ 24,999
Adjustments to reconcile net income to net cash (used in) provided by operating activities:    
Depreciation 2,220 1,972
Amortization of intangible assets 525 397
Amortization of financing fees 44 36
Stock-based compensation 753 890
Deferred income tax expense 1,211 (18,643)
Changes in operating assets and liabilities:    
Accounts receivable (10,416) (1,511)
Inventories, gross (3,319) 2,348
Inventory reserves 1,123 838
Prepaid expenses and other assets (1,575) 373
Income taxes receivable and payable 25 9
Accounts payable and other liabilities 1,125 (822)
Net cash (used in) provided by operating activities (2,970) 10,886
INVESTING ACTIVITIES:    
Purchase of SWE, net of cash acquired (25,248)
Purchases of property, plant and equipment (6,281) (4,185)
Net cash used in investing activities (31,529) (4,185)
FINANCING ACTIVITIES:    
Proceeds from revolving credit facility 10,182
Proceeds from term loan facility 8,000
Payment of term loan facility (866)
Repurchase of common stock (1,957) (742)
Payment of debt issuance costs (157)
Proceeds from exercise of stock options 930 1,568
Tax withholdings on stock-based awards (8) (55)
Proceeds from government grant 397
Net cash provided by financing activities 16,124 1,168
Effect of exchange rate changes on cash (154) (265)
INCREASE (DECREASE) IN CASH (18,529) 7,604
Cash - Beginning of year 25,934 18,330
Cash - End of year 7,405 25,934
Supplemental cash flow information:    
Construction in process in accounts payable 74 1,616
Income taxes paid 266 220
Interest paid $ 576 $ 132