Income Taxes - Summary of Deferred Tax Asset and Liabilities, as Reported in the Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of Deferred Tax Assets and Liabilities, as Reported in the Balance Sheet [Abstract]
Net current deferred tax assets	$ 726	$ 37
Net non-current deferred tax liabilities	(17,978)	(18,180)
Total net deferred tax liabilities:	$ (17,252)	$ (18,143)