Restricted cash (Tables)

12 Months Ended

Dec. 31, 2017

Restricted Cash and Investments [Abstract]

Schedule of Restricted Cash [Table Text Block]

The below table details the Company's restricted cash balances included in Restricted cash on the Consolidated Statement of Assets, Liabilities, and Equity as of December 31, 2017 and 2016.

	December 31, 2017		December 31, 2016
	(In thousands)
Restricted cash balance related to:
Minimum account balance required for regulatory purposes	$	250	$	250
Letter of credit	—		230
Flow consumer loan purchase and sale agreement	175		175
Total	$	425	$	655