Leases (Supplemental Cash Flow and Other Information Related to Leases) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Cash paid for amounts included in measurement of lease liabilities: Operating cash flows from operating leases	$ 829
Cash paid for amounts included in measurement of lease liabilities: Operating cash flows from finance leases	63
Cash paid for amounts included in measurement of lease liabilities: Financing cash flows from finance leases	394
Right-of-use assets obtained in exchange for new lease liabilities: Operating leases	179
Right-of-use assets obtained in exchange for new lease liabilities: Finance leases	$ 837