OTHER SUPPLEMENTAL INFORMATION Other long term liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
OTHER SUPPLEMENTAL INFORMATION.
Uncertain tax liabilities	$ 4,047	$ 4,948
Deferred gain on sale-leaseback	1,795
Other	1,684	1,132
Total	$ 7,526	$ 6,080