Organization and Significant Accounting Policies, Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Right-of-use operating lease assets	$ 12,600
Operating lease liabilities	17,235
Current portion of operating lease liabilities	$ 2,000
Topic 842 [Member]
Leases [Abstract]
Right-of-use operating lease assets		$ 13,500
Operating lease liabilities		18,500
Current portion of operating lease liabilities		$ 2,000