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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
OPERATING ACTIVITIES:    
Net Income $ 7,664 $ 3,482
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:    
Depreciation 2,005 2,223
Amortization of Intangible Assets 422 503
Amortization of Financing Fees 52 71
Stock-Based Compensation 653 710
Loss on Long-Lived Asset Disposals 29
Deferred Income Tax Expense (1,669) 135
Provision for allowance for doubtful accounts (5) (24)
Changes in operating assets and liabilities:    
Accounts Receivable (1,295) (667)
Inventories (2,537) 1,981
Prepaid Expenses and Other Assets (673) 730
Income taxes receivable and payable (8) (158)
Accounts Payable and Other Liabilities 2,661 (1,362)
Net Cash Provided by Operating Activities 7,270 7,653
INVESTING ACTIVITIES:    
Cash Paid for Property, Equipment and Improvements (1,392) (1,219)
Acquisition of Accutronics, Net of Cash Acquired (9,857)
Net Cash Used in Investing Activities (1,392) (11,076)
FINANCING ACTIVITIES:    
Proceeds from Exercise of Stock Options 1,429 460
Tax Withholdings on Stock-Based Awards (26) (28)
Cash Paid to Repurchase Treasury Stock (607)
Proceeds from Debt Borrowings 3,030
Payments of Debt Borrowings (3,030)
Net Cash Provided by (Used in) Financing Activities 1,403 (175)
Effect of Exchange Rate Changes on Cash 331 (166)
INCREASE (DECREASE) IN CASH 7,612 (3,764)
Cash, Beginning of Year 10,629 14,393
Cash, End of Year 18,241 10,629
Supplemental Cash Flow Information:    
Construction in Process in Accounts Payable 87 83
Income Taxes Paid 345 273
Interest Paid $ 102 $ 179