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Common Stock - Additional Information (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended |  | 0 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 09, 2013 | Dec. 09, 2013 Common Stock [Member] | Dec. 31, 2013 Common Stock [Member] | Dec. 31, 2013 Additional Paid-in Capital [Member]
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |
Principal payments on revolving credit facility | $ 264,430 | $ 0 | $ 0 |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Issuance of common stock, shares |  |  |  |  | 7,000,000 | 7,000,000 |
Common stock, par value | $ 0.01 | $ 0.01 |  |  | $ 0.01 |  |
Shares issued, price per share |  |  |  | $ 44.94 |  |  |
Proceeds from issuance of common stock, net of discounts and expenses | $ 314,400 |  |  |  |  | $ 70 | $ 314,300

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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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