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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Stock-Based Compensation Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Mar. 31, 2018
Closing stock price of common stock | $ 30.89 |  | $ 30.89 |  |
Stock options granted | 0 |  | 0 |  |
Employee Stock Option [Member] |  |  |  |  |
Option term |  |  | 10 years |  |
Vesting term |  |  | 5 years |  |
Unrecognized compensation cost | $ 0 |  | $ 0 |  |
Recognized tax benefit on share based compensation |  | $ 0 |  | $ 0 |
Total compensation cost |  |  |  | 6 |
Employee Stock Option [Member] | Maximum [Member] |  |  |  |  |
Unrecognized compensation cost |  | 1 |  | 1 |
Restricted stock [Member] |  |  |  |  |
Unrecognized compensation cost | 187 |  | 187 |  |
Total compensation cost | $ 1,100 | $ 864 | $ 3,500 | $ 2,500 |
Shares available for grant | 0 |  | 0 |  |
Weighted average period, unrecognized compensation expected to be recognized (in years) |  |  | 5 months 1 day |  |
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 |  |  |  |  | 92,767
Restricted Stock Units [Member] |  |  |  |  |
Unrecognized compensation cost | $ 8,100 |  | $ 8,100 |  |
Weighted average period, unrecognized compensation expected to be recognized (in years) |  |  | 1 year 3 months 3 days |  |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=109196918&loc=d3e11374-113907 + Details
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