Earnings per Share (Details) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Weighted average basic common shares outstanding	44,660	45,841	44,783	46,020
Stock options (in shares)	0	0	0	2
Performance shares (in shares)	111	116	105	105
Restricted stock (in shares)	139	171	157	186
Weighted average diluted common and potential common shares outstanding	44,910	46,128	45,045	46,313