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Stockholders' Equity (Details) (USD $) | 0 Months Ended | 3 Months Ended | 12 Months Ended |  | 0 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Mar. 30, 2014 | Nov. 15, 2013 | Nov. 16, 2012 | Feb. 21, 2012 | Mar. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 30, 2011 | Feb. 21, 2012 Common Stock [Member] | Mar. 30, 2011 Common Stock [Member] | Dec. 31, 2011 Common Stock [Member]
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from the sale of common stock |  |  |  | $ 225,000,000 |  |  |  |  |  |  |  |
Sale of common stock, shares |  |  |  |  |  |  |  |  |  | 0 | 6,122,449 | 5,750,000
Sale of common stock, price per share |  |  |  | $ 36.75 |  |  |  |  | $ 31.50 |  |  |
Proceeds from Issuance of Common Stock |  |  |  |  |  | 0 | 218,961,000 | 175,229,000 |  |  |  |
Stock repurchase program, authorized amount |  | 70,000,000 | 100,000,000 |  |  |  |  |  |  |  |  |
Dividends declared, per share |  |  |  |  |  | $ 0.50 |  |  |  |  |  |
Common stock dividends declared, quarterly | $ 0.125 |  |  |  |  | $ 0.125 |  |  |  |  |  |
Dividends paid |  |  |  |  |  | $ 18,633,000 | $ 0 | $ 0 |  |  |  |
Dividends, payment date |  |  |  |  | Mar. 31, 2014 |  |  |  |  |  |  |
Dividends, record date |  |  |  |  | Mar. 03, 2014 |  |  |  |  |  |  |

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