Summary of Significant Accounting Policies (Details 4) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Weighted-average shares outstanding – Basic:
Common stock	32,117	32,142	32,624
Participating common restricted stock	0	17	189
Total	32,117	32,159	32,813
Weighted-average shares outstanding – Diluted:
Common stock	32,873	32,459	32,833
Participating common restricted stock	0	17	189
Total	32,873	32,476	33,022