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SIGNIFICANT ACCOUNTING POLICIES - Reconciliation of weighted average shares outstanding (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings per Share
Net income available for stockholders	$ 29,026	$ 19,444	$ 28,239
Less: Adjustments for earnings attributable to participating securities	(566)	(416)	(669)
Net income used in calculating earnings per share	$ 28,460	$ 19,028	$ 27,570
Weighted average shares outstanding (including participating securities)	33,984	33,926	34,061
Adjustment for participating securities	(672)	(734)	(831)
Shares used in calculating basic and diluted earnings per share	33,312	33,192	33,230

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Weighted number of shares including participating securities.

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The total amount of dividends declared in the period for each class of stock and the contractual amount of dividends (or interest on participating income bonds) that must be paid for the period (for example, unpaid cumulative dividends). Dividends declared in the current period do not include dividends declared in respect of prior-period unpaid cumulative dividends. Preferred dividends that are cumulative only if earned are deducted only to the extent that they are earned.

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