Legal settlements (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
Legal Settlements [Abstract] | |||
Legal settlements, including amounts awarded in a dispute and charges/amounts paid out in a separate dispute. | $ 0 | $ 1,798 | $ 0 |
Legal settlement charge | 6,500 | ||
LegalSettlementChargeForLegalFees | 700 | ||
Payments for Legal Settlements | 7,500 | ||
Gross legal settlement award | 8,800 | ||
Legal settlements | $ 5,300 |