Total operating costs and expenses for the year ended December 31, 2012 were $324.5 million, which included $13.2 million of general litigation expenses, $22.5 million of stock-based compensation expenses, $35.5 million of impairment of goodwill and long-lived assets, $7.3 million of restructuring charges, $30.3 million of amortization expenses and $25.7 million of retention bonuses from past business acquisitions. This is compared to total operating costs and expenses of $313.9 million for the year ended December 31, 2011, which included $61.0 million of general litigation expenses, a $6.2 million gain related to the Samsung settlement (reduction of expense), $28.0 million of stock-based compensation expenses, $20.2 million of amortization expenses and $21.9 million of retention bonuses and acquisition costs from past business acquisitions and $16.2 million for previous stock-based compensation restatement and related legal expenses. The change in total operating costs and expenses was primarily attributable to the impairment of goodwill and long-lived assets and restructuring charge, higher retention bonuses and amortization expenses from business acquisitions, partially offset by lower general litigation expenses, lower previous stock-based compensation restatement and related legal expenses and lower bonus accrual.

Net loss for the fourth quarter of 2012 was $16.1 million as compared to net loss of $58.1 million in the third quarter of 2012 and net loss of $28.7 million in the fourth quarter of 2011. Diluted net loss per share for the fourth quarter of 2012 was $0.14 as compared to diluted net loss per share of $0.52 in the third quarter of 2012 and diluted net loss per share of $0.26 in the fourth quarter of 2011.

Net loss for the year ended December 31, 2012 was $134.3 million as compared to net loss of $43.1 million for the year ended December 31, 2011. Diluted net loss per share for the year ended December 31, 2012 was $1.21 as compared to diluted net loss per share of $0.39 for the year ended December 31, 2011.

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