Organization and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013 Reporting_Unit Customer	Dec. 31, 2012 Customer	Dec. 31, 2011	Jul. 11, 2012
Organization And Summary Of Significant Accounting Policies [Line Items]
Cash, cash equivalents and investments in marketable securities	$ 262,000,000
Indebtedness	160,800,000
Senior secured notes, issued	125,000,000	125,000,000
Senior Secured Notes, interest rate	12.00%
Restricted Cash	25,000,000	25,000,000		25,000,000
Maximum maturity term of investments in marketable securities to be considered as cash equivalents	Three months
Maturity term of investments considered as short-term	Less than one year
Number of customers accounted for major accounts receivable	3	4
Percentage of accounts receivable customers one	30.00%	38.00%
Percentage of accounts receivable customers two	28.00%	27.00%
Percentage of accounts receivable customers three	28.00%	14.00%
Percentage of accounts receivable customers four		11.00%
Number of reporting unit evaluated for goodwill	1
Impairment charges related to goodwill	0	0	0
Minimum percentage of amount realized upon ultimate settlement	50.00%
12% Senior Secured Notes Due July 2017 [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Senior Secured Notes, interest rate	12.00%
Maturity date of senior secured notes	Jul. 15, 2017
Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives	3
Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Contingent payment related to royalty obligation	$ 7,000,000
Property and equipment estimated useful lives	7