Annual report pursuant to Section 13 and 15(d)

Income Taxes - NOL and Tax Credit Carryforward (Details)

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Income Taxes - NOL and Tax Credit Carryforward (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Federal  
Net Operating Losses and Tax Credit Carryforwards  
Net operating losses, amount $ 201,670
Tax credits, amount 5,421
State  
Net Operating Losses and Tax Credit Carryforwards  
Net operating losses, amount 127,025
Tax credits, amount 6,492
Foreign  
Net Operating Losses and Tax Credit Carryforwards  
Net operating losses, amount 3,259
Tax credits, amount $ 10