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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Settlement and Royalty Indemnity Obligation

The following table summarizes the Company's legal settlements and accruals as described above, which are presented in the Consolidated Balance Sheets:

		As of December 31,
(in thousands)		2016				2015
Settlement and Royalty Indemnification		$	5,656			$	6,502
Legal settlements		5,050				—
Legal settlements and accruals, current		10,706				6,502
Settlement and Royalty Indemnification, long-term		5,382				13,797
Total legal settlements and accruals		$	16,088			$	20,299

Schedule of Debt

The following tables summarize the LOC outstanding and related collateral reported in the Consolidated Balance Sheets:

		As of December 31, 2016
(in thousands)		LOC Outstanding				Utilization of LOC Availability				Restricted Cash				Restricted cash, long-term				Investment securities, restricted, long-term
Contract performance - equipment systems		$	1,855			$	1,776			$	86			$	—			$	—
Royalty award		7,150				—				7,150				—				—
Other		6,500				—				6,500				—				—
Total LOC outstanding		$	15,505			$	1,776			$	13,736			$	—			$	—

		As of December 31, 2015
(in thousands)		LOC Outstanding				Utilization of LOC Availability				Restricted Cash				Restricted cash, long-term				Investment securities, restricted, long-term
Contract performance - equipment systems		$	5,556			—				$	728			$	4,830			$	—
Royalty award		6,150				—				—				6,150				—
Other		328				—				—				—				336
Total LOC outstanding		$	12,034			$	—			$	728			$	10,980			$	336

Schedule of Maturities of Long-term Debt

The following tables summarizes the expiration periods of the letters of credit based on the ultimate maturity date of the letters of credit as of December 31, 2016:

		Expiration of Letters of Credit as of December 31, 2016
(in thousands)		Less than 1 year				1-3 years				4-5 years				After 5 years
Letters of credit		$	10,855			$	4,650			$	—			$	—

Schedule of Future Minimum Rental Payments for Operating Leases

Annual minimum commitments under the leases as of December 31, 2016 are as follows:

Years Ending December 31,	Operating Lease Commitments (in thousands)
2017	$	290
2018	268
2019	174
2020	55
Thereafter	—
Total	$	787

Schedule of Rent Expense

Rent expense incurred for the years ended are as follows:

		Years Ended December 31,
(in thousands)		2016				2015				2014
Rent expense		$	847			$	1,838			$	1,531

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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