Leases (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 6,301,000
Operating Lease, Cost	2,111,000
Short-term Lease, Cost	39,000
Variable Lease, Cost	0
Lease, Cost	2,150,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	7,725,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	6,751,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	5,598,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	3,563,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	9,246,000
Lessee, Operating Lease, Liability, Payments, Due	39,184,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	4,090,000
Operating Lease, Liability	$ 35,094,000	$ 34,100,000