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Stockholders' Equity (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 07, 2016 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | May 23, 2016
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of treasury stock (in shares) |  |  |  |  |  |  |  |  |  | 388,063 | 1,244,433 |  |
Shares withheld for tax withholding obligations for the vesting of restricted stock awards (in shares) |  |  |  |  |  |  |  |  |  | 101,335 | 114,523 |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000
Remaining number of shares authorized to be repurchased (in shares) |  | 1,136,269 |  |  |  |  |  |  |  | 1,136,269 |  |  |
MaxAmountOfTenderOfferForRepurchaseOfShares | $ 125,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Share Price | $ 47.50 |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased and Retired During Period, Shares | 3,013,531 |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock | $ 143,100,000 |  |  |  |  |  |  |  |  | $ (144,263,000) |  |  |
Transaction Costs Related to Tender Offer | 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | $ 104,400,000 | $ 104,400,000 |  |  |  | $ 0 |  |  |  | 104,400,000 | $ 0 |  |
Payments of Dividends [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared per share of common stock (in dollars per share) |  | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.22 | $ 0.22 | $ 0.22 | $ 0.22 | $ 0.19 |  |  |  |
Dividends paid |  |  |  |  |  |  |  |  |  | $ 20,599,000 | $ 21,153,000 | $ 69,493,000 |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, authorized (in shares) |  | 20,000,000 |  |  |  | 20,000,000 |  |  |  | 20,000,000 | 20,000,000 |  |
Common stock purchase right per preferred stock share (in shares) |  |  |  |  |  |  |  |  |  | 1 |  |  |
Preferred Stock, Value, Issued |  | $ 0 |  |  |  | $ 0 |  |  |  | $ 0 | $ 0 |  |
Series A Junior Participating Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, authorized (in shares) |  | 600,000 |  |  |  |  |  |  |  | 600,000 |  |  |

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