17. Income Taxes (Unrecognized Tax Benefits) (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Taxes Unrecognized Tax Benefits Details 4
Balance at beginning of year	$ 7,410	$ 7,410
Tax positions taken in prior periods	(2,514)	0
Tax positions taken in current year	5,347	0
Accrual of interest related to tax positions taken	0	0
Settlements	0	0
Foreign currency translation	0	0
Balance at end of year	$ 10,243	$ 7,410