CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowances for credit losses	$ 243	$ 644
Property, plant, and equipment, accumulated depreciation	172,536	159,026
Accumulated amortization on intangible assets	$ 18,180	$ 14,831
Preferred stock, par value (in dollars per shares)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares issued (in shares)	32,034,592	31,249,811
Common stock, shares outstanding (in shares)	32,034,592	31,249,811
Treasury stock, shares (in shares)	1,708,981	1,560,623