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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | [2] | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Anti-dilutive securities excluded from earnings per share calculation (in shares) |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Numerator [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) earnings | $ 3,377 | $ 9,710 | $ 22,776 | [1] | $ (100,696) | [1] | $ 2,895 | $ 4,920 | $ 6,062 | $ 5,320 | $ (64,834) | $ 19,197 | $ 8,603
Undistributed (loss) earnings |  |  |  |  |  |  |  |  |  |  | (68,084) | 15,962 | 5,416
Class A [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Numerator [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) earnings |  |  |  |  |  |  |  |  |  |  | (11,408) | 3,331 | 1,492
Less dividends declared |  |  |  |  |  |  |  |  |  |  | 522 | 522 | 522
Undistributed (loss) earnings |  |  |  |  |  |  |  |  |  |  | $ (11,930) | $ 2,809 | $ 970
Weighted average shares outstanding [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding (in shares) |  |  |  |  |  |  |  |  |  |  | 2,175 | 2,175 | 2,175
Net (loss) earnings per share [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Common share - basic and diluted (in dollars per share) | $ 0.27 | $ 0.78 | $ 1.83 |  | $ (8.15) |  | $ 0.23 | $ 0.39 | $ 0.49 | $ 0.43 | $ (5.25) | $ 1.53 | $ 0.69
Class B [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend rate Class B common stock in excess of dividend rate of Class A common stock |  |  |  |  |  |  |  |  |  |  | 5.00% | 5.00% | 5.00%
Undistributed earning allocation rate of Class B common stock in excess of Class A common stock, percentage |  |  |  |  |  |  |  |  |  |  | 5.00% | 5.00% | 5.00%
Numerator [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) earnings |  |  |  |  |  |  |  |  |  |  | $ (53,426) | $ 15,866 | $ 7,111
Less dividends declared |  |  |  |  |  |  |  |  |  |  | 2,728 | 2,713 | 2,665
Undistributed (loss) earnings |  |  |  |  |  |  |  |  |  |  | $ (56,154) | $ 13,153 | $ 4,446
Weighted average shares outstanding [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding (in shares) |  |  |  |  |  |  |  |  |  |  | 9,749 | 9,698 | 9,491
Net (loss) earnings per share [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Common share - basic and diluted (in dollars per share) | $ 0.29 | $ 0.82 | $ 1.93 |  | $ (8.55) |  | $ 0.25 | $ 0.42 | $ 0.52 | $ 0.45 | $ (5.48) | $ 1.64 | $ 0.75
[1] | In connection with an interim impairment test related to the Company's goodwill and other intangible assets, provisional non-cash impairment charges totaling $104.3 million were recorded during the first quarter of 2016. During the second quarter of 2016, the Company finalized its interim impairment test, which resulted in a $2.6 million reduction to the provisional impairment charge recorded during the first quarter.
[2] | Revised from 10-Q disclosures to reflect immaterial measurement period adjustments related to the 2014 Acquisitions. First quarter 10-Q reflected gross profit of $27.1 million, net earnings of $5.6 million, earnings per Class A common share of $0.45 per share and earnings per Class B common share of $0.48 per share.

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