Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details 7) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Reconciliation of the unrecognized tax benefits
Unrecognized tax benefits, beginning balance	$ 3,890	$ 4,043
Increase related to current year tax positions	1,406	40
Increase related to prior year tax positions	5,728	5
Decrease as a result of lapse of statute of limitations	(16)	(114)
Decrease related to settlements with taxing authorities	0	(14)
Other decrease	0	(70)
Unrecognized tax benefits, ending balance	$ 11,008	$ 3,890

Amount of decrease in unrecognized tax benefits resulting from other decreases.

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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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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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