Income Taxes - Deferred Taxes (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current deferred tax assets	$ 2,578	$ 2,522
Non-current deferred tax assets	15,050	15,012
Non-current deferred tax liabilities	(27,223)	(27,575)
Net deferred tax assets (liabilities)	$ (9,595)	$ (10,041)