Income Taxes (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets, operating loss carryforwards
Tax-effected carrying value of federal NOL carryforwards	$ 32,300,000
Tax-effected carrying value of state NOL carryforwards	4,900,000
Expected future limitations
2013	11,035,000
2014	7,238,000
2015	7,238,000
2016	7,238,000
2017	6,571,000
2018	6,349,000
2019	6,200,000
2020	5,324,000
2021 - 2031 (in total)	34,988,000
Period of cumulative results of operations	3 years
Valuation allowance	27,200,000
Liability for an uncertain tax position	3,600,000
Interest or penalties related to uncertain tax positions	400,000
Change in unrecognized tax benefits
Balance at beginning of year	100,000
Additions for tax positions related to the current year		100,000
Additions for tax positions related to prior years	3,697,000
Balance at end of year	3,797,000	100,000
Aggregate undistributed earnings of non-U.S. subsidiaries	2,400,000
Unrecognized deferred tax liability related to the undistributed earnings of non-U.S. subsidiaries	$ 100,000