Leases (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Leases [Abstract]
Operating Lease, Payments	$ 665	$ 1,420
Lessor, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	5,700	5,700
Finance and Operating Lease Assets	4,800	4,800
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	1,149	1,149
Finance Lease, Liability, Payments, Remainder of Fiscal Year	68	68
Lease, Cost	558	1,076
Lessee, Operating Lease, Liability, Payments, Due Year Two	1,406	1,406
Finance Lease, Liability, Payments, Due Year Two	100	100
Lessee, Operating Lease, Liability, Payments, Due Year Three	820	820
Finance Lease, Liability, Payments, Due Year Three	90	90
Lessee, Operating Lease, Liability, Payments, Due Year Four	660	660
Finance Lease, Liability, Payments, Due Year Four	64	64
Lessee, Operating Lease, Liability, Payments, Due Year Five	606	606
Finance Lease, Liability, Payments, Due Year Five	36	36
Lessee, Operating Lease, Liability, Payments, Due after Year Five	2,752	2,752
Finance Lease, Liability, Payments, Due after Year Five	10	10
Lessee, Operating Lease, Liability, Payments, Due	7,393	7,393
Finance Lease, Liability, Payments, Due	368	368
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(1,484)	(1,484)
Finance Lease, Liability, Undiscounted Excess Amount	(42)	(42)
Operating Lease, Liability	5,909	5,909
Finance Lease, Liability	326	326
Operating Lease, Liability, Noncurrent	4,300	4,300
Finance and Operating Lease Liabilities	$ 6,236	$ 6,236
Operating Lease, Weighted Average Remaining Lease Term	6 years 5 months 20 days	6 years 5 months 20 days
Operating Lease, Weighted Average Discount Rate, Percent	4.60%	4.60%
Finance Lease, Weighted Average Remaining Lease Term	3 years 6 months 20 days	3 years 6 months 20 days
Finance Lease, Weighted Average Discount Rate, Percent	7.30%	7.30%
Finance Lease, Interest Payment on Liability	$ 144	$ 161
Other Operating Income (Expense) [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Cost	522	1,033
Depreciation and amortization expense [Member]
Lessor, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset, Amortization	26	54
Interest Expense [Member]
Lessor, Lease, Description [Line Items]
Finance Lease, Interest Expense	10	12
Property, Plant and Equipment, Type [Domain]
Lessor, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset	416	416
Accrued Expenses [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Liability, Current	1,567	1,567
Current portion of capital leases [Member]
Lessor, Lease, Description [Line Items]
Finance Lease, Liability, Current	104	104
Other longterm liabilities [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Liability, Noncurrent	4,343	4,343
Finance Lease, Liability, Noncurrent	222	222
Other Assets [Member]
Lessor, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 4,384	$ 4,384