Income Taxes (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of changes in the balance of unrecognized tax benefits
Beginning balance	$ 1,744	$ 1,813	$ 1,607
Increases in tax positions for prior years	53	34	154
Increases in tax positions for current year	103	611	52
Settlements	(716)	(704)	0
Expirations of statutes	(42)	(10)	0
Ending balance	$ 1,142	$ 1,744	$ 1,813