Other Liabilities (Details) - USD ($) $ in Thousands	4 Months Ended
	Apr. 30, 2016	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Other current liabilities		$ 24		$ 556
Interest and penalties accrued		$ 0		0
Loss contingency accrual				100
Argentina equity tax 2009 through 2012
Net income tax due				400
Interest and penalties accrued	$ 200			200
Income taxes paid	$ 200
Tax (settlement) payable			$ (200)
Sentient Loan
Accrued interest				$ 100