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Statements of Stockholders' Equity (USD $) In Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Loss [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 114,480 | $ 23,003 | $ 9,885 | $ 137,125 | $ (35,885) | $ (19,648)
Net income | 40,015 |  |  | 40,015 |  |
Pension liability, net of deferred taxes | (7,895) |  |  |  |  | (7,895)
Dividends paid | (8,159) |  |  | (8,159) |  |
Stock-based compensation | 2,953 |  | 2,953 |  |  |
Exercise of stock options and vesting of RSU's | (5,859) |  | (5,859) |  |  |
Tax benefit realized from exercise of stock options and vesting of RSU's | 3,855 |  | 3,855 |  |  |
Common stock issued - compensation plans |  | 380 | (380) |  |  |
Repurchase shares of common stock | (1,999) |  |  |  | (1,999) |
Unpaid dividends accrued |  |  |  |  |  |
Balance at Dec. 31, 2011 | 137,391 | 23,383 | 10,454 | 168,981 | (37,884) | (27,543)
Net income | 70,629 |  |  | 70,629 |  |
Pension liability, net of deferred taxes | (2,077) |  |  |  |  | (2,077)
Dividends paid | (111,523) |  |  | (111,523) |  |
Stock-based compensation | 4,718 |  | 4,718 |  |  |
Exercise of stock options and vesting of RSU's | (2,935) |  | (2,935) |  |  |
Tax benefit realized from exercise of stock options and vesting of RSU's | 3,474 |  | 3,474 |  |  |
Common stock issued - compensation plans |  | 180 | (180) |  |  |
Repurchase shares of common stock |  |  |  |  |  |
Unpaid dividends accrued | (4,645) |  |  | (4,645) |  |
Balance at Dec. 31, 2012 | 95,032 | 23,563 | 15,531 | 123,442 | (37,884) | (29,620)
Net income | 111,272 |  |  | 111,272 |  |
Pension liability, net of deferred taxes | 10,240 |  |  |  |  | 10,241
Dividends paid | (41,079) |  |  | (41,079) |  |
Stock-based compensation | 5,288 |  | 5,288 |  |  |
Exercise of stock options and vesting of RSU's | (2,423) |  | (2,423) |  |  |
Tax benefit realized from exercise of stock options and vesting of RSU's | 2,302 |  | 2,302 |  |  |
Common stock issued - compensation plans |  | 84 | (84) |  |  |
Repurchase shares of common stock |  |  |  |  |  |
Unpaid dividends accrued | (1,547) |  |  | (1,547) |  |
Balance at Dec. 31, 2013 | $ 179,086 | $ 23,647 | $ 20,614 | $ 192,088 | $ (37,884) | $ (19,379)

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- Definition Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 740 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6419406&loc=d3e23524-113945 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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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 SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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