Leases (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 5,616,000	$ 5,616,000
Operating Lease, Cost	2,825,000	4,936,000
Short-term Lease, Cost	4,000	43,000
Variable Lease, Cost	0	0
Lease, Cost	2,829,000	4,979,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	10,569,000	10,569,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	9,487,000	9,487,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	8,402,000	8,402,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	6,396,000	6,396,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	18,799,000	18,799,000
Lessee, Operating Lease, Liability, Payments, Due	59,269,000	59,269,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	6,162,000	6,162,000
Operating Lease, Liability	$ 53,107,000	$ 53,107,000	$ 34,100,000