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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Cash flows from operating activities:    
Net income $ 2,923 $ 1,668
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 2,646 2,503
Forgiveness of PPP Loan and related interest (3,599) 0
Deferred income taxes 1,015 (3,070)
Non-cash compensation 491 426
Deferred loan costs amortized 7 14
Net gain on disposal or abandonment of assets 11 (236)
Provision for excess and obsolete inventory 162 222
Non-cash lease expense 963 911
Other noncash items 150 (1)
Contributions to pension plans (297) (862)
Changes in operating assets and liabilities:    
Accounts receivable (1,265) 214
Inventory (13,978) 4,230
Prepaid expenses and other assets (1,314) (204)
Accounts payable 5,268 (2,591)
Accrued and other liabilities 11,055 424
Net cash provided by operating activities 4,238 3,648
Cash flows from investing activities:    
Capital expenditures (2,824) (1,542)
Proceeds from sale of assets 10 1,969
Net cash (used in) provided by investing activities (2,814) 427
Cash flows from financing activities:    
Principal payments on finance lease obligations (499) (715)
Principal payments on equipment financing obligations (176) 0
Proceeds from Paycheck Protection Program loan 0 3,558
Indirect repurchase of shares for minimum statutory tax withholdings (607) (103)
Net cash (used in) provided by financing activities (1,282) 2,740
Effect of exchange rate changes on cash balances (128) (304)
Net increase in cash and cash equivalents 14 6,511
Cash and cash equivalents at beginning of year 11,606 5,095
Cash and cash equivalents at end of year 11,620 11,606
Supplemental disclosure of cash flow information:    
Fixed assets obtained in exchange for finance lease and equipment financing obligations $ 4,012 $ 0