Income Taxes Operating losses and credit carryforwards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (1,861)	$ (400)
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	41,405	42,022
Tax Credit Carryforward, Amount	1,369	2,579
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	24,168	40,286
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	38,152	39,905
Tax Credit Carryforward, Amount	$ 29,462	$ 22,463
Maximum [Member] | India
Operating Loss Carryforwards [Line Items]
Foreign tax holiday (percentage)	100.00%
Minimum [Member] | India
Operating Loss Carryforwards [Line Items]
Foreign tax holiday (percentage)	50.00%