Income Taxes - Deferred Taxes (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current deferred tax assets	$ 2,500	$ 2,522
Non-current deferred tax assets	15,100	15,012
Non-current deferred tax liabilities	(27,351)	(27,575)
Net deferred tax assets (liabilities)	$ (9,751)	$ (10,041)