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SHARE-BASED COMPENSATION PLAN (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 05, 2011 | Feb. 23, 2011 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2014 | Dec. 31, 2011 | Dec. 31, 2015 | Dec. 31, 2013
Employees [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation [Abstract] |  |  |  |  |  |  |  |  |
Shares repurchased during the period (in shares) |  |  |  | 13,000 | 13,500 |  |  |  |
Employees [Member] | Restricted Stock Awards [Member] |  |  |  |  |  |  |  |  |
Restricted shares - Employees [Roll Forward] |  |  |  |  |  |  |  |  |
Non-vested at beginning of period (in shares) |  |  | 138,665 |  |  |  |  |  |
Granted during the year (in shares) |  |  | 0 | 4,500 |  |  |  |  |
Vested during the year (in shares) |  |  | (26,500) |  |  |  |  |  |
Forfeited during the year (in shares) |  |  | 0 |  |  |  |  |  |
Non-vested at end of period (in shares) |  |  | 112,165 | 138,665 |  |  |  |  |
Weighted-average grant-date fair value - Employees [Abstract] |  |  |  |  |  |  |  |  |
Non-vested at beginning of period (in dollars per share) |  |  | $ 13.55 |  |  |  |  |  |
Granted during the year (in dollars per share) |  |  | 0 | $ 9.13 |  |  |  |  |
Vested during the year (in dollars per share) |  |  | 9.84 |  |  |  |  |  |
Forfeited during the year (in dollars per share) |  |  | 0 |  |  |  |  |  |
Non-vested at end of period (in dollars per share) |  |  | $ 14.43 | $ 13.55 |  |  |  |  |
2011 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation [Abstract] |  |  |  |  |  |  |  |  |
Vesting requirement lifted for shares (in shares) |  |  |  |  |  |  |  |  | 174,000
Shares available for future issuance (in shares) |  |  |  |  |  |  |  | 137,665 |
Total compensation cost for the period |  |  | $ 0.4 | $ 0.5 | $ 0.4 |  |  |  |
Treasury shares (in shares) |  |  | 22,000 |  |  |  |  |  |
Restricted shares - Employees [Roll Forward] |  |  |  |  |  |  |  |  |
Granted during the year (in shares) |  |  |  |  |  |  | 400,000 |  |
2011 Equity Incentive Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation [Abstract] |  |  |  |  |  |  |  |  |
Share-based compensation arrangement shares cliff vesting period |  |  | 4 years |  |  |  |  |  |
2011 Equity Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation [Abstract] |  |  |  |  |  |  |  |  |
Share-based compensation arrangement shares cliff vesting period |  |  | 5 years |  |  |  |  |  |
2011 Equity Incentive Plan [Member] | Employees and Non Employees [Member] | Restricted Stock Awards [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation [Abstract] |  |  |  |  |  |  |  |  |
Share-based compensation arrangement shares cliff vesting period |  |  | 4 years |  |  |  |  |  |
Common shares repurchased at fair value (in shares) |  |  |  |  |  | 33,000 |  |  |
Fair value of shares issued to manager (in dollars per share) |  |  |  |  |  | $ 9.84 |  |  |
Unrecognized compensation cost related to unvested restricted stock |  |  | $ 0.4 |  |  |  |  |  |
Weighted average period to recognize the unrecognized compensation cost |  |  | 8 months 12 days |  |  |  |  |  |
Restricted shares - Employees [Roll Forward] |  |  |  |  |  |  |  |  |
Granted during the year (in shares) | 74,000 | 326,000 |  |  |  |  |  |  |

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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 The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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 (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + 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 (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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