Income Taxes (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
Income tax expense	$ 4,014,000	$ 2,295,000	$ 5,618,000	$ 4,557,000
Effective income tax rate			8.77%	10.46%
Operating loss carryforwards, domestic	48,900,000		48,900,000
Unrecognized Tax Benefits	8,342,000		8,342,000		5,925,000
Unrecognized tax benefits, period increase (decrease)			2,400,000
Unrecognized tax benefits, income tax penalties and interest expense			$ 766,000
India [Member]
Operating Loss Carryforwards [Line Items]
Foreign tax holiday (percentage)			50.00%
Foreign statutory income tax rate			33.99%
Foreign income tax holiday, term			5 years
Singapore [Member]
Operating Loss Carryforwards [Line Items]
Foreign statutory income tax rate			17.00%
Foreign effective income tax rate			10.00%