Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Beginning Balance	$ 95,031,000	$ 80,531,000
Acquisitions		14,606,000
Foreign exchange adjustments	(44,000)	(106,000)
Ending Balance	94,987,000	95,031,000	$ 80,531,000
Accumulated goodwill impairment charges	23,500,000
Goodwill impairment recognized	0	0	0
Business
Goodwill [Roll Forward]
Beginning Balance	87,007,000	72,507,000
Acquisitions		14,606,000
Foreign exchange adjustments	(44,000)	(106,000)
Ending Balance	86,963,000	87,007,000	72,507,000
Consumer
Goodwill [Roll Forward]
Beginning Balance	8,024,000	8,024,000
Foreign exchange adjustments	0	0
Ending Balance	$ 8,024,000	$ 8,024,000	$ 8,024,000