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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash flows from operating activities:    
Net income $ 3,456 $ 7,961
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 3,049 2,823
Deferred income tax 0 517
Share-based compensation 318 316
Losses (gains) on foreign currency translation 235 (74)
Change in operating assets and liabilities:    
Accounts receivable (12,618) 4,389
Inventories (2,013) 2,050
Prepaid and other assets 303 (4,882)
Accounts payable 8,283 (7,444)
Accrued and other liabilities (1,385) (184)
Post retirement benefits liability (140) (93)
Net cash provided (used in) by operating activities (512) 5,379
Cash flows from investing activities:    
Purchase of property, plant and equipment (2,436) (456)
Net cash used in investing activities (2,436) (456)
Cash flows from financing activities:    
Gross repayments on revolving line of credit (5,915) (38,814)
Gross borrowings on revolving line of credit 8,496 34,582
Payments related to the purchase of treasury stock (47) 0
Payment of deferred loan costs (2) 0
Payment of principal on term loans (688) (1,125)
Net cash provided by (used in) financing activities 1,844 (5,357)
Net change in cash and cash equivalents (1,104) (434)
Cash and cash equivalents at beginning of period 4,131 1,856
Cash and cash equivalents at end of period 3,027 1,422
Cash paid for:    
Interest 467 1,088
Income taxes 2,560 185
Non-cash investing activities:    
Fixed asset purchases in accounts payable $ 99 $ 184