Costs Associated with Exit and Restructuring Activities - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 1,993,000	$ 1,586,000
Restructuring charges
Restructuring Charges	7,448,000	5,062,000	$ 4,139,000
April 2014 Plan and June 2016 Plan | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	7,448,000	5,062,000	4,139,000
June2016 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	233,000	668
Restructuring charges
Restructuring Charges	4,284,000	4,559,000	4,139,000
April 2014 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	703,000	918,000
Restructuring charges
Restructuring Charges	$ 248,000	$ 503,000	$ 0