2. Significant Accounting Policies Schedule of Leasing Costs Incurred (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Schedule of Leasing Costs Incurred [Line Items]
Payments for Leasing Costs	$ 276	$ 1,611
New Lease [Member]
Schedule of Leasing Costs Incurred [Line Items]
Payments for Leasing Costs	276	1,600
Lease Renewal [Member]
Schedule of Leasing Costs Incurred [Line Items]
Payments for Leasing Costs	$ 0	$ 11

Amount of cash outflow for costs that are essential to originate the lease and would not otherwise have been incurred without the lease agreement. Amount includes, but is not limited to, cash outflows to evaluate the lessee's credit condition, guarantees, and collateral and cash outflows for costs incurred in negotiating, processing, and executing the lease agreement.

No definition available.

Name:	us-gaap_PaymentsForLeasingCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration