Other Income (Expense), Net (Details) (USD $)	1 Months Ended	3 Months Ended			6 Months Ended
	May 31, 2014	Jun. 30, 2014		Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013
Other Income and Expenses [Abstract]
Reduction of accrual for loss contingency related to legal proceedings (Note 8)		$ 0		$ (110,000,000)	$ 69,557,000		$ (110,000,000)
Gain on sale of product line	6,500,000	6,522,000	[1]	0	6,522,000	[1]	0
Gain on sale of cost-method investment		0		3,591,000	0		3,591,000
Other income (expense), net		(456,000)		(709,000)	(1,487,000)		318,000
Total other income, net		6,066,000		(107,118,000)	74,592,000		(106,091,000)
Proceeds from sale of Source product line	14,400,000				14,394,000		0
Reduction in Goodwill	$ (5,100,000)

[1] In May 2014, the Company sold its Source product line for approximately $14.4 million, net of transaction fees, recording a gain of approximately $6.5 million before taxes. As a part of this transaction, the Company reduced Goodwill on the Marine reporting unit by $5.1 million. The historical results of this product line have not been material to the Company’s results of operations.