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Consolidated Statements of STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data | Common Stock [Member] | Class A Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Loss [Member] | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 25,288 | $ 4,431 | $ (76,044) | $ 62,614 | $ 244,953 | $ (16,685) |
Balance (in shares) at Dec. 31, 2009 | 25,287,812 | 4,430,625 | (8,291,557) |  |  |  |
Conversion of Class A Common Stock | 577 | (577) |  |  |  |  |
Conversion of Class A Common Stock (in shares) | 576,950 | (576,950) |  |  |  |  |
Stock compensation transactions, net | 407 |  |  |  |  |  |
Stock compensation transactions, net (in shares) | 407,344 |  |  |  |  |  |
Directors' Plan |  |  | 85 | 186 |  |  |
Directors' Plan (in shares) |  |  | 8,880 |  |  |  |
Purchases |  |  | 0 |  |  |  |
Purchases (in shares) |  |  | 0 |  |  |  |
Stock option and restricted stock issuances |  |  |  | 1,898 |  |  |
Tax benefit (cost) related to stock-based plans |  |  |  | 800 |  |  |
Amortization of restricted stock grants |  |  |  | 1,716 |  |  |
Net income (loss) |  |  |  |  | 8,444 |  | 8,444
Cash dividends |  |  |  |  | (2,168) |  |
Pension liability adjustment, net of taxes |  |  |  |  |  | (2,944) | (2,944)
Other |  |  |  |  |  | 201 |
Balance at Dec. 31, 2010 | 26,272 | 3,854 | (75,959) | 67,214 | 251,229 | (19,428) | 253,182
Balance (in shares) at Dec. 31, 2010 | 26,272,106 | 3,853,675 | (8,282,677) |  |  |  |
Conversion of Class A Common Stock | 212 | (212) |  |  |  |  |
Conversion of Class A Common Stock (in shares) | 211,440 | (211,440) |  |  |  |  |
Stock compensation transactions, net | 94 |  |  |  |  |  |
Stock compensation transactions, net (in shares) | 94,647 |  |  |  |  |  |
Directors' Plan |  |  | 112 | 157 |  |  |
Directors' Plan (in shares) |  |  | 11,653 |  |  |  |
Purchases |  |  | 0 |  |  |  |
Purchases (in shares) |  |  | 0 |  |  |  |
Stock option and restricted stock issuances |  |  |  | (237) |  |  |
Tax benefit (cost) related to stock-based plans |  |  |  | 15 |  |  |
Amortization of restricted stock grants |  |  |  | 2,060 |  |  |
Net income (loss) |  |  |  |  | 15,463 |  | 15,463
Cash dividends |  |  |  |  | (2,609) |  |
Pension liability adjustment, net of taxes |  |  |  |  |  | (5,769) | (5,769)
Other |  |  |  |  |  | 201 |
Balance at Dec. 31, 2011 | 26,578 | 3,642 | (75,847) | 69,209 | 264,083 | (24,996) | 262,669
Balance (in shares) at Dec. 31, 2011 | 26,578,193 | 3,642,235 | (8,271,024) |  |  |  |
Conversion of Class A Common Stock | 345 | (345) |  |  |  |  |
Conversion of Class A Common Stock (in shares) | 344,802 | (344,802) |  |  |  |  |
Stock compensation transactions, net | 289 |  |  |  |  |  |
Stock compensation transactions, net (in shares) | 289,189 |  |  |  |  |  |
Directors' Plan |  |  | 249 | 147 |  |  |
Directors' Plan (in shares) |  |  | 25,649 |  |  |  |
Purchases |  |  | (218) |  |  |  |
Purchases (in shares) |  |  | (18,182) |  |  |  |
Stock option and restricted stock issuances |  |  |  | (1,605) |  |  |
Tax benefit (cost) related to stock-based plans |  |  |  | 289 |  |  |
Amortization of restricted stock grants |  |  |  | 2,553 |  |  |
Net income (loss) |  |  |  |  | 14,911 |  | 14,911
Cash dividends |  |  |  |  | (24,684) |  |
Pension liability adjustment, net of taxes |  |  |  |  |  | 1,501 | 1,501
Other |  |  |  |  |  | 117 |
Balance at Dec. 31, 2012 | $ 27,212 | $ 3,297 | $ (75,816) | $ 73,803 | $ 254,310 | $ (23,378) | $ 259,428
Balance (in shares) at Dec. 31, 2012 | 27,212,184 | 3,297,433 | (8,263,557) |  |  |  |

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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section B -Paragraph 11A -Chapter 1 -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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
Name: | us-gaap_StockRepurchasedDuringPeriodValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration