Income Tax (Table) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Balance as of December 31	$ 2,650	$ 2,331
Decreases related to current year tax positions	(383)	(6)
Increases related to current year tax positions	320	325
Balance as of December 31.	$ 2,587	$ 2,650