Income Taxes - Operating Loss Carryforwards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 13,709	$ 13,927
NOL expiration period for domestic locations, minimum (in years)	15 years	15 years
NOL expiration period for domestic locations, maximum (in years)	20 years	20 years
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
NOL carryforwards	$ 80,900	$ 86,900
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
NOL carryforwards	$ 135,700	$ 135,700