Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 01, 2018
Finite And Infinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets impairment charge		$ 2,310,000	$ 2,544,000
Finite lived intangible assets impairment charge		2,637,000
Goodwill impairment charge, net		3,165,000	3,192,000	$ 0
Amortization expense		2,454,000	$ 2,769,000	2,727,000
Market price per share			$ 5.68		$ 9.64
Goodwill impairment		$ 3,165,000	$ 3,212,000
Sabre [Member]
Finite And Infinite Lived Intangible Assets [Line Items]
Goodwill impairment	$ 2,850,000
Impairment of intangible assets	3,723,000
PM/Valla [Member]
Finite And Infinite Lived Intangible Assets [Line Items]
Goodwill impairment	315,000
Impairment of intangible assets	$ 1,224,000
Patented and Unpatented Technology [Member]
Finite And Infinite Lived Intangible Assets [Line Items]
Weighted average amortization period for definite lived intangibles		7 years
Customer Relationships [Member]
Finite And Infinite Lived Intangible Assets [Line Items]
Finite lived intangible assets impairment charge		$ 2,637,000
Weighted average amortization period for definite lived intangibles		6 years
Trademark [Member]
Finite And Infinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets impairment charge		$ 2,310,000	$ 2,544,000	$ 0
Customer Relationships [Member]
Finite And Infinite Lived Intangible Assets [Line Items]
Finite lived intangible assets impairment charge		$ 2,637,000
Trade Names and Trademarks [Member]
Finite And Infinite Lived Intangible Assets [Line Items]
Weighted average amortization period for definite lived intangibles		12 years