Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 126		$ 32	$ 216		$ 216
Payments/Settlements	93		32	303		93
Charges		$ 126		119	$ 126	119
Payments/Settlements	(93)		(32)	(303)		(93)
Balance at end of period		126		32
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	126		14	190		190
Payments/Settlements	93		14	295	93	309
Charges		126		119	126
Payments/Settlements	$ (93)		(14)	(295)	$ (93)	(309)
Balance at end of period		$ 126		14
Facility Costs And Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period			18	26		26
Payments/Settlements			(18)	(8)		(26)
Payments/Settlements			$ 18	8		$ 26
Balance at end of period				$ 18

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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Balance Type:	credit
Period Type:	duration

- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

+ Details

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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