SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Stock-Based Compensation Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Closing stock price of common stock	$ 26.22
Stock options granted	0
Employee Stock Option [Member]
Option term	10 years
Vesting term	5 years
Restricted stock [Member]
Vesting term	3 years
Shares available for grant	194,742
Unrecognized compensation cost	$ 62
Weighted average period, unrecognized compensation expected to be recognized (in years)	5 months 15 days
Total compensation cost	$ 1,400	$ 1,100
Restricted stock [Member] \| Tranche One [Member]
Vesting term	3 years
Restricted stock [Member] \| Tranche Two [Member]
Vesting term	5 years
Performance Shares [Member]
Shares available for grant	47,770
Restricted Stock Units [Member]
Unrecognized compensation cost	$ 13,200
Weighted average period, unrecognized compensation expected to be recognized (in years)	1 year 4 months 2 days

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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Price of a single share of a number of saleable stocks of a company.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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