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NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE (Details) (USD $) | 2 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Aug. 15, 2011 | Jul. 20, 2011
Shares used in computing basic and diluted net income per share [Abstract] |  |  |  |  |  |
Weighted average common shares outstanding during the period for Basic computation (in shares) |  | 8,666,000 | 8,122,000 | 7,557,000 |  |
Dilutive effect of employee stock options (in shares) |  | 51,000 | 38,000 | 61,000 |  |
Weighted average common shares outstanding during the period for Diluted computation (in shares) |  | 8,717,000 | 8,160,000 | 7,618,000 |  |
Common stock excluded from calculations of diluted net income per share (in shares) |  | 60,750 | 234,000 |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Equity per common share (in dollars per share) |  | $ 13.60 | 13.91 | 12.59 |  |
Class A Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Common stock, shares authorized (in shares) |  | 15,000,000 |  |  |  |
Common stock, shares issued (in shares) |  | 7,828,836 | 7,729,506 | 6,755,654 | 84,000 | 804,290
Common stock, shares outstanding (in shares) |  | 7,828,836 | 7,729,506 | 6,755,654 |  |
Common stock, par value (in dollars per share) |  | $ 1.00 |  |  |  |
Common stock, shares issued during period (in shares) | 888,000 | 99,330 | 85,600 | 129,876 |  |
Class B Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Common stock, shares authorized (in shares) |  | 1,040,000 |  |  |  |
Common stock, shares issued (in shares) |  | 881,452 | 881,452 | 881,452 |  |
Common stock, shares outstanding (in shares) |  | 881,452 | 881,452 | 881,452 |  |
Common stock, par value (in dollars per share) |  | $ 1.00 |  |  |  |

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- Definition Face amount or stated value of common stock per share; generally not indicative of the fair market value per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References No definition available. + Details
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 + Details
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