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STOCK COMPENSATION PLANS (Details) |  |  | 3 Months Ended
--- | --- | --- | ---
May 03, 2017 $ / shares shares | May 04, 2016 $ / shares shares | Mar. 31, 2018 USD ($) Director $ / shares shares | Mar. 31, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of directors in committee | Director |  |  | 3 |
Intrinsic value of awards |  |  | $ 149,000 |
Restricted Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting period |  |  | 1 year |
Class A Stock [Member] | 2015 Equity Compensation Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation expense | $ |  |  | $ 47,000 | $ 34,000
Unrecognized expense related to non-vested option shares | $ |  |  | $ 0 |
Class A Stock [Member] | Stock Options [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |  |
Outstanding at beginning of period, option shares (in shares) | shares |  |  | 176,802 |
Granted, option shares (in shares) | shares |  |  | 0 |
Exercised (in shares) | shares |  |  | (6,750) |
Expired, option shares (in shares) | shares |  |  | 0 |
Outstanding at end of period, option shares (in shares) | shares |  |  | 170,052 |
Exercisable/vested at end of period, option share (in shares) | shares |  |  | 170,052 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] |  |  |  |
Outstanding at beginning of period, weighted average exercise price (in dollars per shares) |  |  | $ 19.91 |
Granted, weighted average exercise price (in dollars per share) |  |  | 0 |
Exercised, weighted average exercise price (in dollars per shares) |  |  | 15.26 |
Expired, weighted average exercise price (in dollars per share) |  |  | 0 |
Outstanding at end of period, weighted average exercise price (in dollars per shares) |  |  | 20.09 |
Options exercisable at year end (in dollars per shares) |  |  | $ 20.09 |
Shares of Class A Non-Voting Common Stock under option [Abstract] |  |  |  |
Outstanding at end of period, weighted average remaining life |  |  | 4 years 18 days |
Exercisable/vested at end of period, weighted average remaining life |  |  | 4 years 18 days |
Outstanding at beginning of period, aggregate intrinsic value | $ |  |  | $ 3,298,000 |
Granted, aggregate intrinsic value | $ |  |  | 0 |
Exercised/ vested and released, aggregate intrinsic value | $ |  |  | 149,000 |
Expired/cancelled, aggregate intrinsic value | $ |  |  | 0 |
Outstanding at end of period, aggregate intrinsic value | $ |  |  | 2,787,000 |
Exercisable/vested at end of period, aggregate intrinsic value | $ |  |  | $ 2,787,000 |
Class A Stock [Member] | Restricted Stock [Member] |  |  |  |
Shares [Roll Forward] |  |  |  |
Outstanding at beginning of year (in shares) | shares |  |  | 5,000 |
Granted (in shares) | shares |  |  | 0 |
Exercised/vested and released, restricted stock awards (in shares) | shares |  |  | 0 |
Cancelled (in shares) | shares |  |  | 0 |
Unvested Outstanding at end of year (in shares) | shares |  |  | 5,000 |
Weighted Average Grant Date Fair Value [Abstract] |  |  |  |
Outstanding at beginning of year (in dollars per shares) |  |  | $ 38.10 |
Granted, weighted average grant date fair value (in dollars per share) |  |  | 0 |
Vested and released, weighted average grant date fair value (in dollars per shares) |  |  | 0 |
Cancelled, weighted average grant date fair value (in dollars per share) |  |  | 0 |
Unvested Outstanding at end of year (in dollars per shares) |  |  | $ 38.10 |
Class A Stock [Member] | Restricted Stock [Member] | 2015 Equity Compensation Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized expense related to non-vested option shares | $ |  |  | $ 16,700 |
Period over which unvested options cost will recognized |  |  | 10 months 24 days |
Fair value per share (in dollars per share) | $ 38.10 | $ 27.70 |  |
Shares [Roll Forward] |  |  |  |
Granted (in shares) | shares | 5,000 | 5,000 |  |

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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&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://www.xbrl.org/2003/role/presentationRef -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=96867065&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://www.xbrl.org/2003/role/presentationRef -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=96867065&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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