Redeemable Preferred Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Dec. 18, 2012
Equity [Abstract]
Preferred stock, redemption amount	$ 146,635	$ 146,603	$ 143,200
Preferred stock, shares issued	0	0	8,955,730
Preferred stock, redemption price per share			$ 15.99