Segment and Geographic Data (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net revenues	$ 317,919	$ 269,812	$ 283,958
Gross profit	125,142	104,271	111,617
Segment operating income (loss)	27,372	22,657	28,648
Acquisition costs	1,198	0	443
Impairment of goodwill and indefinite-lived intangibles	1,223	2,440	0
Executive severance costs	0	0	611
Restructuring costs	76	918	2,293
Depreciation and amortization expense	14,996	12,507	11,795
Capital expenditures	17,567	24,327	10,529
Total assets	461,889	401,887	370,413
Sensors
Segment Reporting Information [Line Items]
Net revenues	127,861	120,754	121,827
Gross profit	45,474	47,530	49,166
Segment operating income (loss)	26,527	29,486	30,262
Acquisition costs	0		0
Impairment of goodwill and indefinite-lived intangibles	0	0
Executive severance costs			0
Restructuring costs	0	551	79
Depreciation and amortization expense	5,967	5,227	5,228
Capital expenditures	13,213	21,885	6,688
Total assets	142,510	138,932	96,316
Weighing Solutions
Segment Reporting Information [Line Items]
Net revenues	125,390	101,386	119,854
Gross profit	45,900	32,250	40,664
Segment operating income (loss)	23,184	12,145	19,121
Acquisition costs	0		0
Impairment of goodwill and indefinite-lived intangibles	0	0
Executive severance costs			0
Restructuring costs	76	234	2,041
Depreciation and amortization expense	3,415	3,291	3,475
Capital expenditures	3,434	1,961	2,729
Total assets	152,399	160,679	168,953
Measurement Systems
Segment Reporting Information [Line Items]
Net revenues	64,668	47,672	42,277
Gross profit	33,768	24,491	21,787
Segment operating income (loss)	13,480	11,763	10,191
Acquisition costs	1,198		443
Impairment of goodwill and indefinite-lived intangibles	1,223	2,440
Executive severance costs			0
Restructuring costs	0	51	7
Depreciation and amortization expense	3,834	2,653	1,809
Capital expenditures	913	468	1,074
Total assets	159,816	78,810	86,133
Operating Segments | Sensors
Segment Reporting Information [Line Items]
Net revenues	127,861	120,754	121,827
Operating Segments | Weighing Solutions
Segment Reporting Information [Line Items]
Net revenues	125,390	101,386	119,854
Operating Segments | Measurement Systems
Segment Reporting Information [Line Items]
Net revenues	64,668	47,672	42,277
Corporate/ Other
Segment Reporting Information [Line Items]
Net revenues		0	0
Gross profit		0	0
Segment operating income (loss)	(35,819)	(30,737)	(30,926)
Acquisition costs	0		0
Impairment of goodwill and indefinite-lived intangibles	0	0
Executive severance costs			611
Restructuring costs	0	82	166
Depreciation and amortization expense	1,780	1,336	1,283
Capital expenditures	7	13	38
Total assets	7,164	23,466	19,011
Intersegment revenues
Segment Reporting Information [Line Items]
Net revenues	(3,487)	(3,183)	(4,093)
Intersegment revenues | Sensors
Segment Reporting Information [Line Items]
Net revenues	3,487	3,183	4,067
Intersegment revenues | Weighing Solutions
Segment Reporting Information [Line Items]
Net revenues	0	0	26
Intersegment revenues | Measurement Systems
Segment Reporting Information [Line Items]
Net revenues	$ 0	$ 0	$ 0