Leases (Details-2) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Lessee Disclosure [Abstract]
Finance lease assets, net, Finance lease assets	$ 16,976	$ 2,181
Operating lease assets, Other deferred assets and other	121
Total lease assets	17,097
Finance lease liabilities - current, Other current liabilities	1,049
Finance lease liabilities - long term, Finance lease liabilities	17,666	$ 1,771
Operating lease liabilities - current, Other current liabilities	72
Operating lease liabilities - long term, Other deferred liabilities and other	85
Total lease liabilities	$ 18,872