Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2012
Changes in the valuation allowance
Balance at beginning of year	$ 25,050	$ 27,430	$ 7,983
State net operating loss carryforwards	260	(2,228)		(651)
Foreign net operating loss carryforwards	(3,232)	20,207		296
Other	592	264		1,559
Balance at end of year	$ 25,050	$ 27,430	$ 7,983