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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
OPERATING ACTIVITIES:    
Net (loss) income $ (230) $ 5,331
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:    
Depreciation 2,906 2,340
Amortization of intangible assets 633 595
Amortization of financing fees 104 51
Stock-based compensation 671 943
Deferred income tax expense (147) 1,386
Gain on litigation settlement 0 (1,593)
Changes in operating assets and liabilities:    
Accounts receivable 4,423 9,211
Inventories, gross (1,296) 1,799
Prepaid expenses and other assets 64 (134)
Income taxes receivable and payable (91) 139
Accounts payable and other liabilities (2,712) 1,652
Net cash provided by operating activities 4,325 21,720
INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (2,814) (3,101)
Proceeds from sale of equipment 0 120
Net cash used in investing activities (26,333) (2,981)
FINANCING ACTIVITIES:    
Proceeds from amended credit facilities 20,980 0
Payment of credit facilities (1,474) (15,842)
Proceeds from exercise of stock options 398 238
Tax withholdings on stock-based awards (148) (90)
Payment of debt issuance costs (114) 0
Net cash provided by (used in) financing activities 19,642 (15,694)
Effect of exchange rate changes on cash 126 203
INCREASE (DECREASE) IN CASH (2,240) 3,248
Cash - Beginning of year 10,653 7,405
Cash - End of year 8,413 10,653
Supplemental cash flow information:    
Construction in process in accounts payable 135 675
Income taxes paid 324 264
Interest paid 142 375
UEHC [Member]    
INVESTING ACTIVITIES:    
Purchase of Excell, net of cash acquired $ (23,519) $ 0