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Long-Term Debt (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012
Long-term Debt, Unclassified [Abstract] |  |
Break-Down Of Long-Term Debt | Long-term debt consisted of the following items as of March 31, 2013 and December 31, 2012:
| March 31, 2013 |  | December 31, 2012
| (In thousands)
Revolving credit agreement (1) | $ | — |  |  | $ | — |
Building loans (2) | 2,107 |  |  | 2,143 |
7.75% senior unsecured notes due 2020 (3) | 300,000 |  |  | 300,000 |
Unamortized original issue (discount) premium, net (4) | (3,034 | ) |  | (3,105 | )
Less: current maturities of long term debt | (152 | ) |  | (150 | )
Debt reflected as long term | $ | 298,921 |  |  | $ | 298,888 |
| A break-down of long-term debt as of December 31, 2012 and 2011 is as follows:
| December 31,
| 2012 |  | 2011
Revolving credit agreement (1) | $ | — |  |  | $ | — |
Building loans (2) | 2,143,000 |  |  | 2,283,000 |
7.75% senior unsecured notes due 2020 (3) | 300,000,000 |  |  | — |
Unamortized original issue (discount) premium, net (4) | (3,105,000 | ) |  | — |
Less: current maturities of long term debt | (150,000 | ) |  | (141,000 | )
Debt reflected as long term | $ | 298,888,000 |  |  | $ | 2,142,000 |
Maturities of Long-Term Debt |  | Maturities of long-term debt (excluding premiums and discounts) as of December 31, 2012 are as follows:
2013 | $ | 150,000 |
2014 | 158,000 |
2015 | 168,000 |
2016 | 1,667,000 |
2017 | — |
Thereafter | 300,000,000 |
Total | $ | 302,143,000 |
Schedule of Interest |  | The following schedule shows the components of interest expense at December 31, 2012 and 2011:
| December 31,
| 2012 |  | 2011
Cash paid for interest | $ | 1,404,000 |  |  | $ | 963,000 |
Change in accrued interest | 4,155,000 |  |  | (132,000 | )
Write-off of deferred loan costs | 1,143,000 |  |  | — |
Amortization of loan costs | 640,000 |  |  | 540,000 |
Amortization of note discount and premium | 59,000 |  |  | — |
Other | 57,000 |  |  | 29,000 |
Total interest expense | $ | 7,458,000 |  |  | $ | 1,400,000 |

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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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