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Consolidated Statements of Cash Flows - USD ($)
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Cash flows from operating activities:    
Net Income (Loss) Attributable to Parent $ 7,542,000 $ 5,689,000
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 6,161,000 5,588,000
Deferred income tax 0 517,000
Share-based compensation 804,000 704,000
Losses (gains) on foreign currency translation 188,000 (45,000)
Change in operating assets and liabilities:    
Accounts receivable (17,070,000) 10,842,000
Inventories (3,679,000) 5,457,000
Prepaid and other assets 110,000 (3,667,000)
Accounts payable 9,119,000 (7,910,000)
Accrued and other liabilities 5,557,000 1,438,000
Post retirement benefits liability (236,000) (130,000)
Net cash provided by operating activities 8,496,000 18,483,000
Cash flows from investing activities:    
Purchase of property, plant and equipment (5,387,000) (1,644,000)
Net cash used in investing activities (5,387,000) (1,644,000)
Cash flows from financing activities:    
Gross repayments on revolving line of credit (9,507,000) (59,357,000)
Gross borrowings on revolving line of credit 9,287,000 47,349,000
Payments related to the purchase of treasury stock (47,000) 0
Payment of deferred loan costs (2,000) 0
Proceeds from Bank Debt 0 175,000
Payment of principal on term loans (1,375,000) (2,258,000)
Net cash used in financing activities (1,644,000) (14,091,000)
Net change in cash and cash equivalents 1,465,000 2,748,000
Cash and cash equivalents at beginning of period 4,131,000 1,856,000
Cash and cash equivalents at end of period 5,596,000 4,604,000
Cash paid for:    
Interest 935,000 2,377,000
Income taxes 3,503,000 302,000
Non-cash investing activities:    
Fixed asset purchases in accounts payable $ 99,000 $ 146,000