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Leases Total Lease Cost (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases [Abstract]    
Operating lease cost $ 372,000 $ 391,000
Short-term lease cost 74,000 71,000
Variable lease cost 127,000 133,000
Sublease income 28,000 0
Total lease cost, net $ 545,000 $ 595,000