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SHAREHOLDERS' EQUITY (Details) - USD ($) |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 29, 2021 | Nov. 22, 2021 | Sep. 29, 2021 | Aug. 31, 2021 | Jun. 14, 2021 | May 24, 2021 | Mar. 30, 2021 | Mar. 02, 2021 | Aug. 08, 2017 | Dec. 31, 2021 | Dec. 31, 2020 | May 28, 2021 | Aug. 31, 2018 | Aug. 31, 2016 | Aug. 28, 2006 | Jun. 30, 2004 | May 19, 1998
Preferred Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  |  |  |  |  |  |  |  | 99,000,000 | 99,000,000 |  |  |  |  |  | 100,000,000
Preferred stock, shares authorized (in shares) |  |  |  |  |  |  |  |  |  | 1,000,000 | 1,000,000 |  |  |  |  |  |
Preferred stock, par value (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 0.01 | $ 0.01 |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000 |  |
Stock repurchased since inception |  |  |  |  |  |  |  |  |  | $ 5,052,000 | $ 5,933,000 |  |  |  |  |  |
Treasury stock repurchased (in shares) |  |  |  |  |  |  |  |  |  | 200,115 | 351,581 |  |  |  |  |  |
Treasury stock repurchased, average cost per share (USD per share) |  |  |  |  |  |  |  |  |  | $ 26.76 | $ 17.79 |  |  |  |  |  |
Shares issued due to exercise of stock options (in shares) |  |  |  |  |  |  |  |  |  | 58,483 |  |  |  |  |  |  |
Shares issued as compensation for the work (in shares) |  |  |  |  |  |  |  |  |  | 11,238 |  |  |  |  |  |  |
Sale of Stock, Number of Shares Issued in Transaction |  |  |  |  |  |  |  |  |  |  | 294,117 |  |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  |  |  |  |  | $ 25,972,000 | $ 27,275,000 |  |  |  |  |  |
Ending balance |  |  |  |  |  |  |  |  |  | 24,412,000 | 25,972,000 |  |  |  |  |  |
Dividends declared, price per share (USD per share) |  | $ 1.70 |  | $ 0.20 |  | $ 0.16 |  | $ 0.16 |  |  |  |  |  |  |  |  |
Dividends | $ 3,300,000 |  | $ 400,000 |  | $ 300,000 |  | $ 300,000 |  |  | 4,300,000 | 3,300,000 |  |  |  |  |  |
Class of Treasury Stock [Table] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Repurchase of Common Stock |  |  |  |  |  |  |  |  |  | $ 5,052,000 | 5,933,000 |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared - Quarterly Amount |  | $ 0.20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Repurchase Price Per Share |  |  |  |  |  |  |  |  |  |  |  | $ 26.00 |  |  |  |  |
Common Stock, Dividends, Per Share, Declared - Special Amount |  |  |  |  |  |  |  |  |  | $ 1.50 |  |  |  |  |  |  |
June 2004 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 131,756 |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,300,000 |
Stock repurchased during period, shares |  |  |  |  |  |  |  |  | 112,672 |  |  |  |  |  |  |  |
August 2006 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, remaining authorized repurchase amount |  |  |  |  |  |  |  |  |  | $ 12,600,000 |  |  | $ 500,000 | $ 500,000 |  |  |
Stock repurchased since inception |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |
May 28 2021 Tender Offer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  |  |  |  |  | 211,538 |  |  |  |  |
Stock repurchased since inception |  |  |  |  |  |  |  |  |  | $ 4,500,000 |  |  |  |  |  |  |
Treasury stock repurchased (in shares) |  |  |  |  |  |  |  |  |  | 171,433 |  |  |  |  |  |  |
Foreign Currency Translation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  |  |  |  |  | $ 4,793,000 | 3,435,000 |  |  |  |  |  |
Current-period change before reclassifications |  |  |  |  |  |  |  |  |  | (2,832,000) | 1,358,000 |  |  |  |  |  |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |
Income tax provision |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |
Ending balance |  |  |  |  |  |  |  |  |  | 1,961,000 | 4,793,000 |  |  |  |  |  |
Pension Postretirement Benefit Obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  |  |  |  |  | 357,000 | 322,000 |  |  |  |  |  |
Current-period change before reclassifications |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  |  |  |  |  |  |  |  | 37,000 | 54,000 |  |  |  |  |  |
Income tax provision |  |  |  |  |  |  |  |  |  | (13,000) | (19,000) |  |  |  |  |  |
Ending balance |  |  |  |  |  |  |  |  |  | 381,000 | 357,000 |  |  |  |  |  |
Accumulated other comprehensive income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  |  |  |  |  |  |  | 5,150,000 | 3,757,000 |  |  |  |  |  |
Current-period change before reclassifications |  |  |  |  |  |  |  |  |  | (2,832,000) | 1,358,000 |  |  |  |  |  |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  |  |  |  |  |  |  |  | 37,000 | 54,000 |  |  |  |  |  |
Income tax provision |  |  |  |  |  |  |  |  |  | (13,000) | (19,000) |  |  |  |  |  |
Ending balance |  |  |  |  |  |  |  |  |  | $ 2,342,000 | $ 5,150,000 |  |  |  |  |  |

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