Income Taxes - Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Income tax provision at the federal statutory tax rate	$ 6,070,000	$ 17,458,000	$ 21,229,000
Unremitted Earnings	1,743,000	7,857,000	0
Transition Tax	(416,000)	(3,118,000)	18,388,000
Revaluation of U.S deferred tax assets and liabilities	0	0	4,470,000
Global intangible low taxed income	0	1,211,000	0
Foreign derived intangible income	(2,380,000)	(1,034,000)	0
Non-deductible acquisition expenses	1,970,000	1,019,000	4,779,000
Share-based compensation	(540,000)	259,000	(1,419,000)
Differences in tax rates on foreign earnings and remittances	920,000	1,081,000	(2,663,000)
Excess Foreign Tax Credit Utilization	0	0	(2,761,000)
Research and development activities credit utilization	(385,000)	(230,000)	(235,000)
Uncertain tax positions	899,000	(79,000)	(651,000)
U.S. domestic production activities deduction	0	0	(1,155,000)
State income tax provisions, net	(117,000)	196,000	569,000
Non-deductible meals and entertainment	318,000	415,000	248,000
Intercompany transfer of intellectual property	(5,318,000)	0	0
Miscellaneous items, net	(680,000)	15,000	854,000
Income Tax Expense (Benefit), Total	$ 2,084,000	$ 25,050,000	$ 41,653,000