Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 56,749,000	$ 58,272,000
Net operating loss carryforwards, expiration year	2015
Deferred tax assets, net operating loss carryforwards	6,198,000	6,364,000
Valuation allowance of operating loss carryforwards, percentage	100.00%	100.00%
Non-current deferred tax assets	6,293,000	11,605,000
Undistributed earnings of foreign subsidiaries	284,611,000
Unrecognized deferred tax liability associated with undistributed earnings	70,218,000
Unrecognized tax benefits that would affect the effective tax rate	10,328,000	12,735,000
Estimated change in unrecognized tax benefits, minimum range	0
Estimated change in unrecognized tax benefits, maximum range	10,136,000
Interest expense and penalties recognized (reversed)	(357,000)	(501,000)	780,000
Accrued interest and penalties related to uncertain tax positions	$ 3,077,000	$ 3,434,000