Employee Benefit Plans (Narrative) (Details) (USD $)	12 Months Ended					12 Months Ended								12 Months Ended					0 Months Ended			12 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Apr. 30, 2013	May 26, 2011	Dec. 31, 2013 Employee Stock Option [Member]	Dec. 31, 2012 Employee Stock Option [Member]	Dec. 31, 2011 Employee Stock Option [Member]	Dec. 31, 2013 2009 Long Term Incentive Plan [Member]	Dec. 31, 2012 2009 Long Term Incentive Plan [Member]	Dec. 31, 2011 2009 Long Term Incentive Plan [Member]	Apr. 30, 2013 2009 Long Term Incentive Plan [Member]	May 26, 2011 2009 Long Term Incentive Plan [Member]	Dec. 31, 2013 2009 Long Term Incentive Plan [Member] Employee Stock Option [Member]	Dec. 31, 2012 2009 Long Term Incentive Plan [Member] Employee Stock Option [Member]	Dec. 31, 2011 2009 Long Term Incentive Plan [Member] Employee Stock Option [Member]	Dec. 31, 2013 2009 Long Term Incentive Plan [Member] Restricted Stock [Member]	Dec. 31, 2013 401(K) Plans [Member]	Apr. 30, 2013 Director [Member] Restricted Stock [Member]	May 16, 2012 Director [Member] Restricted Stock [Member]	May 19, 2011 Director [Member] Restricted Stock [Member]	Dec. 31, 2013 Director [Member] Restricted Stock [Member]	Apr. 30, 2013 Director [Member] 2009 Long Term Incentive Plan [Member] Restricted Stock [Member]	Dec. 31, 2013 Director [Member] 2009 Long Term Incentive Plan [Member] Restricted Stock [Member]	Sep. 30, 2013 Chief Executive Officer [Member] 2009 Long Term Incentive Plan [Member] Employee Stock Option [Member]	Sep. 30, 2009 Chief Executive Officer [Member] 2009 Long Term Incentive Plan [Member] Employee Stock Option [Member]	Dec. 31, 2013 Chief Executive Officer [Member] 2009 Long Term Incentive Plan [Member] Employee Stock Option [Member]
Restricted Stock, Granted																	264,383		15,305	31,095	31,405				68,116
Allocated Share-based Compensation Expense						$ 3,426,000	$ 2,621,000	$ 1,497,000																			$ 100,000
Modification of September 30, 2009 employment agreement																											On May 1, 2012, the Compensation Committee modified the terms of the Option Agreement to extend the expiration of the stock options granted thereunder to September 30, 2019, resulting in additional compensation expense of $0.1 million in the year ended December 31, 2012. Upon a change in control as defined in the 2009 LTIP, all stock options under the Option Agreement remain exercisable for a period of not less than 30 months following the change in control. In November 2009, the Compensation Committee approved a compensation program for each of our non-employee directors which provides for the annual grant of a stock award with a market value of $100,000 (as measured on the date of grant and prorated from the date of grant, as applicable). Pursuant to the terms of the program,
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	3,574,000			3,574,000	2,474,000							3,574,000	2,474,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	1,184,322								1,184,322
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award														10 Years									one-half of each stock award vests immediately on the date of grant, and the remaining one-half vests immediately prior to the next annual meeting of stockholders held after the grant date.			The terms of the Option Agreement provided for an exercise price equal to $10.00 per share. The closing price of our common stock on the NYSE on September 30, 2009 was $7.46 per share. The option vested ratably on a monthly basis over a 36-month period from the date of grant; however, the vesting for the first six months of the vesting period (the "Initial Period") was deferred until the end of the Initial Period and any remaining unvested portion vested ratably on a monthly basis over the remainder of the 36-month vesting period, subject to the executive remaining continuously employed. Under the original terms of the award agreement, vested stock options under the Option Agreement were to expire 30 months following the applicable vesting date of such stock options.
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period														3 years
Weighted-average grant-date fair value of stock options granted														$ 14.50	$ 8.84	$ 7.97
Weighted-average grant-date fair value nonvested share awards granted									$ 26.60	$ 16.33	$ 15.34						$ 26.60
Total fair value of nonvested share awards vested during period									4,100,000	2,000,000	600,000
Aggregate instrinsic value of stock options exercised during period															500,000	100,000
Unrecognized compensation expense														5,600,000			6,100,000
Weighted average recognition period														2 years			2 years
Deferred Compensation Arrangement with Individual, Description																								Pursuant to elections made by two directors applicable to certain of these awards, the receipt of such awards totaling 39,009 shares is deferred until such directors cease to serve on our Board of Directors. During the year ended December 31, 2013, one of our non-employee directors resigned, forfeiting 1,531 shares awarded under this program.
Deferred Compensation Arrangement with Individual, Shares Issued																						39,009
Deferred Compensation Arrangement with Individual, Shares Forfeited																						1,531
Description of 401(K) Plan																		We also have a 401(k) Plan that covers all employees. We match 100% of each individual participant's contribution not to exceed 6% of the participant's compensation. Our matching contributions are made in cash.
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay																		6.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 900,000	$ 800,000	$ 700,000