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, 2012	Dec. 31, 2011	Dec. 31, 2010	May 26, 2011	Sep. 21, 2009	Dec. 31, 2012 Stock Options [Member]	Dec. 31, 2011 Stock Options [Member]	Dec. 31, 2010 Stock Options [Member]	Dec. 31, 2012 2009 Long Term Incentive Plan [Member]	Dec. 31, 2011 2009 Long Term Incentive Plan [Member]	Dec. 31, 2010 2009 Long Term Incentive Plan [Member]	May 26, 2011 2009 Long Term Incentive Plan [Member]	Dec. 31, 2012 2009 Long Term Incentive Plan [Member] Stock Options [Member]	Dec. 31, 2011 2009 Long Term Incentive Plan [Member] Stock Options [Member]	Dec. 31, 2010 2009 Long Term Incentive Plan [Member] Stock Options [Member]	Dec. 31, 2012 2009 Long Term Incentive Plan [Member] Restricted Stock [Member]	Dec. 31, 2012 401(K) Plans [Member]	May 16, 2012 Director [Member] Restricted Stock [Member]	May 19, 2011 Director [Member] Restricted Stock [Member]	May 20, 2010 Director [Member] Restricted Stock [Member]	Dec. 31, 2012 Director [Member] Restricted Stock [Member]	May 16, 2012 Director [Member] 2009 Long Term Incentive Plan [Member] Restricted Stock [Member]	May 19, 2011 Director [Member] 2009 Long Term Incentive Plan [Member] Restricted Stock [Member]	May 20, 2010 Director [Member] 2009 Long Term Incentive Plan [Member] Restricted Stock [Member]	Dec. 31, 2012 Director [Member] 2009 Long Term Incentive Plan [Member] Restricted Stock [Member]	May 01, 2012 Chief Executive Officer [Member] 2009 Long Term Incentive Plan [Member] Stock Options [Member]	Sep. 30, 2009 Chief Executive Officer [Member] 2009 Long Term Incentive Plan [Member] Stock Options [Member]	Dec. 31, 2012 Chief Executive Officer [Member] 2009 Long Term Incentive Plan [Member] Stock Options [Member]
Restricted Stock, Granted																238,199		31,095	31,405	42,735							68,116
Allocated Share-based Compensation Expense						$ 2,621,000	$ 1,497,000	$ 673,000																				$ 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 remaining unvested stock options under the Option Agreement automatically vest and remain exercisable for a period of not less than 30 months following the change in control.
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	2,474,000			2,474,000	1,237,000							2,474,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	679,608								679,608
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award													10 Years									one-half vested immediately and one-half will vest on the day immediately preceding the date of the 2013 Annual Meeting of Stockholders.	one-half vested immediately and one-half vested on the day immediately preceding the date of the 2012 Annual Meeting of Stockholders.	one-half vested immediately and one-half vested on the day immediately preceding the date of the 2011 Annual Meeting of Stockholders.			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													$ 8.84	$ 7.97	$ 5.32
Weighted-average grant-date fair value nonvested share awards granted									$ 16.33	$ 15.34	$ 11.70					$ 16.33
Total fair value of nonvested share awards vested during period									2,000,000	600,000	500,000
Aggregate instrinsic value of stock options exercised during period													500,000	100,000	0
Unrecognized compensation expense													3,900,000			3,400,000
Weighted average recognition period													2 years			2 years
Deferred Compensation Arrangement with Individual, Description																									Pursuant to elections made by two directors applicable to certain awards, the receipt of such awards totaling 32,887 shares is deferred until such directors cease to serve on our Board of Directors.
Deferred Compensation Arrangement with Individual, Shares Issued																					32,887
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																	6.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 800,000	$ 700,000	$ 600,000