Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Operating loss carryforwards, federal	$ 160,840,000
Operating loss carryforwards, state	55,215,000
Deferred tax assets, valuation allowance	75,179,000	$ 35,927,000
Federal NOL annual utilization limit	14,100,000
Net operating losses, unrecognized excess tax benefits, federal	1,928,000
Net operating losses, unrecognized excess tax benefits, state	37,771,000
Capital loss carryovers	3,423,000
Deferred Tax Asset, Operating and Capital Loss Carryforwards and Credits	71,494,000	59,427,000
Foreign withholding taxes			$ 4,605,000
Excess tax benefits from stock-based compensation	0	0	(1,398,000)
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	1,917,000	2,713,000	$ 1,398,000
Foreign tax credits, additional paid in capital benefit	34,298,000
Foreign tax credits utilized for financial statement purposes	$ 20,313,000
Tax Benefit From Reversal of the Net Deferred Tax Liability		$ 1,735,000
Effective Income Tax Rate Reconciliation, Percent	3.00%	6.00%	(27.00%)
Effective tax rate excluding valuation allowance	(28.00%)	(33.00%)	31.00%
Unrecognized tax benefits	$ 2,127,000
unrecognized tax benefits primarily associated with state taxes	85,000
Domestic Tax Authority [Member]
Income Taxes [Line Items]
Net operating losses included in deferred tax assets	0
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Net operating losses included in deferred tax assets	441,000
Capital Loss Carryforward Related to Business Acquisition [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Operating Loss Carryforwards	$ 29,318,000