v3.19.1

COMPENSATION PLANS (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common stock available for issuance | 3,000,000 |  |
Total compensation expense | $ 4.2 | $ 3.6 | $ 3.6
Total unrecognized compensation expense | $ 5.0 |  |
Restricted Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Awards, outstanding | 1,953,305 | 3,163,903 |
Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Exercise in the period | 95,004 |  | 0
Awards, outstanding | 3,351,684 | 2,075,821 |
Non Qualified Stock Options [Abstract] |  |  |
Options granted, weighted average fair value | $ 2.33 | $ 1.38 | $ 0.61
Options exercised, intrinsic value | $ 0.3 | $ 0.3 |
2015 [Member] | Performance Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares, earned | 0 |  |
Restricted Stock [Abstract] |  |  |
Granted in period, weighted average fair value | $ 13.84 |  |
Service Based Vesting [Member] | Restricted Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares, earned | 1,112,256 |  |
Shares granted | 277,911 |  |
Restricted Stock [Abstract] |  |  |
Granted in period, weighted average fair value | $ 4.16 | $ 2.27 | $ 1.07
Shares canceled | 305,002 |  |
Service Based Vesting [Member] | Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected volatility | 72.80% | 71.50% | 63.80%
Service Based Vesting [Member] | Key Employees [Member] | Restricted Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares granted | 187,296 |  |
Restricted Stock [Abstract] |  |  |
Vesting period | 2 years |  |
Service Based Vesting [Member] | Key Employees [Member] | Stock Options [Member] |  |  |
Restricted Stock [Abstract] |  |  |
Vesting period | 3 years |  |
Non Qualified Stock Options [Abstract] |  |  |
Options granted in the period | 623,274 |  |
Grant term | 10 years |  |
Service Based Vesting [Member] | Director [Member] | Restricted Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares granted | 90,615 |  |
Restricted Stock [Abstract] |  |  |
Vesting period | 1 year |  |
Service And Market Condition Based Vesting [Member] | Restricted Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected volatility |  | 81.70% | 86.20%
Shares, earned | 71,251 |  |
Restricted Stock [Abstract] |  |  |
Granted in period, weighted average fair value | $ 2.10 | $ 0.91 |
Shares canceled | 0 |  |
Service And Market Condition Based Vesting [Member] | Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected volatility | 75.00% | 81.70% | 86.20%
Service And Market Condition Based Vesting [Member] | Key Employees [Member] | Stock Options [Member] |  |  |
Restricted Stock [Abstract] |  |  |
Vesting period | 3 years |  |
Non Qualified Stock Options [Abstract] |  |  |
Options granted in the period | 934,911 |  |
Grant term | 5 years |  |
Closing market value of common stock for vesting | $ 5.85 |  |
Minimum consecutive trading days | 20 days |  |
Service And Market Condition Based Vesting [Member] | 2017 [Member] | Restricted Shares [Member] |  |  |
Restricted Stock [Abstract] |  |  |
Vesting period | 3 years |  |
Service And Market Condition Based Vesting [Member] | 2016 [Member] | Restricted Shares [Member] |  |  |
Restricted Stock [Abstract] |  |  |
Vesting period | 4 years |  |
Service And Performance Based Vesting [Member] | Restricted Shares [Member] |  |  |
Restricted Stock [Abstract] |  |  |
Granted in period, weighted average fair value | $ 3.91 |  |
Service And Performance Based Vesting [Member] | Key Employees [Member] | Restricted Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares granted | 187,296 |  |
Restricted Stock [Abstract] |  |  |
Vesting period | 1 year |  |
Shares canceled | 187,296 |  |

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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 The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of grants made 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 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 estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition 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. + 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 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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