Share-Based Compensation - Summary of Grant Date Fair Value of Awards (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options	$ 841	$ 2,569	$ 632
Restricted stock	2,306	830	325
Total	$ 3,147	$ 3,399	$ 957