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Basis of Presentation (Details) - USD ($)
Mar. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Disclosure Text Block [Abstract]      
Operating Lease, Right-of-Use Asset $ 1,373,000 $ 1,463,000
Operating Lease, Liability, Noncurrent 1,054,000 1,127,000
Operating Lease, Liability, Current $ 353,000 $ 368,000