7. Income Taxes (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 0		$ 0		$ 0
Deferred tax asset	31,400		31,400
U.S. federal deferred tax assets	22,000		22,000
State deferred tax assets	9,400		9,400
Income tax expense	$ 1,489	$ 3,380	$ 2,901	$ 6,692
Effective income tax rate			32.00%	43.00%