Income Taxes (Textual) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
GILTI provisions as result of tax reforms	$ 700,000
BEAT provisions as result of tax reforms	0
Income taxes (paid), net of refunds	5,439,000	$ (2,065,000)	$ 10,587,000
General business credits carryforwards	8,300,000
Foreign tax credits carryforwards	4,500,000
Decrease in reserve during next 12 due to settling of state tax appeals and lapse of statue of limitations	(100,000)
Penalties and interest accruals	300,000	300,000
Penalties and interest expense	0	$ 100,000
U.S.
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	46,600,000
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	103,400,000
Non U.S.
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 600,000